Charlie blows up at his sister's baby shower.
Charlie isn't sure if his father, Martin, is developing Alzheimer's.
Charlie begins a questionable romantic relationship with an ex-patient.
Charlie's dad falls in with a bad crowd.
Jennifer moves in with Charlie temporarily and Kate gets jealous.
Charlie tries to help his patient, Ed, with a placebo pill that's supposedly reduces anger.
Charlie dates his daughter, Sam's, teacher.
Charlie takes on Cee Lo Green as an anger therapy patient.
Charlie and Kate face off as expert witnesses in the same trial.
Charlie and his dad get into it when Martin has Charlie's daughter, Sam, baptized behind Charlie's back.
An irreverent yet charming sportscaster who, after a loss, finds solace from members of his mandatory group therapy sessions.
When Lindsay Lohan comes to Charlie for therapy, they begin a tumultuous relationship.
Charlie's ex, Jennifer, causes him problems with his group when she becomes one of his patient's "life coach".
Charlie's neighborhood is up in arms when they find out he's been having clients with anger issues meeting at his home.
Charlie inadvertently puts two patients in his group together in a romantic relationship.
Charlie gets jealous and uses a patient, Nolan, to spy on Kate.
Charlie lets his father help him coach a high school baseball team with bad results.
Charlie's ex, Jennifer, causes him problems with his group when she becomes one of his patient's "life coach".
Martin tries to undermine Charlie and Kate's relationship by telling Kate that Charlie and Jennifer are getting back together.
Charlie shakes up his relationship with Kate while dealing with the return of Jen's ex-boyfriend, Sean
Charlie begins seeing a new female therapist who has unorthodox therapy methods. Also, Patrick tricks Ed into thinking he won the lottery.
Recently broken up, Charlie and Kate try to control their sexual urges as they begin work together on their sex study. Also, Lacey starts a new job as a pharmaceutical rep.
Charlie discovers scandalous information about Jen's new boyfriend, Sean, when he joins his therapy group. Also, Ed moves in with Patrick
Charlie breaks all the professional rules by starting a friends-with-benefits relationship with a hot woman subject from the sex study. Also, Nolan and Patrick fight over a woman.
Charlie's trip with the group is interrupted when he gets some interesting news from Kate. Also, Charlie's house is unwittingly used for a porno shoot.
Charlie steals a hot woman from an angry nerd. Lacey takes drugs in order to sell drugs.
Charlie picks up a woman at prison, unaware that she is the sister of one of his most unhappy patients. Lacey secretly puts on a strip show for Nolan.
Charlie suspects Jen's boyfriend, Sean, is cheating on her with his patient, Lacey. Also, Nolan's apartment gets robbed.
Charlie mistakenly becomes a sex surrogate for one of Kate's patients, who is a thirty-two-year-old virgin.
Charlie has to deal with the aftermath when his dad moves in with his patient, Ed and they hit someone with their car. Also, Lacey takes Nolan out for a night of clubbing
Charlie gets jealous of Jennifer's much younger boyfriend; Patrick helps Lacey look sexy for her first modeling gig.
Charlie is held hostage by his prison group during a riot. Charlie's therapy group tries to hide it from his daughter by throwing a birthday party.
Charlie and Kate are ready to sleep with the right people to get funding for their sex study.
Charlie tries to stop Kate from having sex with the executive in charge of funding their study; Charlie's dad tries to stop Lacey from throwing herself at a sleazy yoga instructor.
Charlie recruits Sean to help him throw the epic party of the century. Meanwhile, Lacey inadvertently gets Ed hooked on drugs.
Charlie competes with Nolan for the crazy hot grad student that's observing his group. Meanwhile, Martin and Ed come up with a patriotic scam.
Charlie is forced to hire a new psychologist to replace Kate in his sex study, and she turns out to be anything but a stabilizing influence. Meanwhile Jennifer and Lacey trick Sean by saying he got them both pregnant.
Charlie sleeps with Jordan's hot AA sponsor who happens to be a recovering sex addict.
Charlie receives an unusual payment when he brings a pimp into his therapy group. Meanwhile, Sean and Michael get into a racial dating mishap.
In a special Halloween episode, Charlie gets a new patient in his therapy group who believes he's the devil.
Charlie and Sean go to war when Charlie begins having casual sex with his ex, who is Sean's former girlfriend.
Charlie seeks his prison group's help when his partying ways result in him getting arrested.
When Charlie finds out that the woman he lost his virginity to, thinks that it was really bad, he becomes determined to get a "do-over" at his first time.
Charlie is pursued by a hot reporter who wants to experience his sex study.
When Lacey gets caught breaking the law she persuades the judge to sentence her to house arrest at Charlie's house, much to Charlie's disdain.
Charlie's Christmas plans with Sasha are derailed when Ed steals the Baby Jesus from a Latino church.
Charlie seeks his prison group's help when his partying ways result in him getting arrested.
Charlie is in trouble when he finds out that a woman he had a one-night fling with is related to his supervisor.
When Jordan's sexy twin sister comes to town, Charlie ends up sleeping with her.
Charlie and Sean start a competition to see who can score first with a gorgeous woman from out of town.
When Charlie's best party buddy becomes a priest; Charlie's tries to tempt him with women and liquor.
When Charlie meets the daughter of his father's neighbor he finds it hard to resist her.
After a hot one-time fling with a hot secretary, Charlie finds himself in trouble when he realizes this girl is related to his supervisor.
Charlie uses Jordan to improve his online "date rating" to land a hot girl.
After Jordan wrecks their sex study, Charlie is inspired to start a new clinic at the prison.
When Charlie keeps choosing sex over work, Jordan convinces his girlfriend, Sasha, to cut him off for six months.
Charlie goes ballistic when a drunk Jordan makes out with a prisoner.
Charlie spends the night with Lacey to keep her from hugging her ex-boyfriend.
Charlie sleeps with the girlfriend of a unhappy prisoner in his clinic, only to find out that the prisoner is being released the next day.
Charlie lets his house become a halfway house for five hookers.
Charlie tries to keep Lacey from hooking up with a dangerous ex-con.
Mayhem breaks out when Charlie surprises his group by bringing all of their dysfunctional parents to one of the sessions.
Charlie tries to resist temptations from Sean's hot younger sister.
Charlie's girlfriend brings home a hot friend.
Charlie gets Sean fired from the strip club when he sleeps with one of the strippers.
Charlie makes a promise to an attractive reporter; it involves an interview with an extremely furious convict.
Charlie and Jordan have to share a hotel room to expose a shady couple's therapist.
Charlie sets Sean up with a hottie even though he knows Sean is hooking up with Jordan.
Charlie gets in hot water with his prison group when he sleeps with the attractive new warden.
Charlie inadvertently helps a member of his prison group in an escape attempt.
Charlie struggles to control his anger after meeting a hot girl who doesn't date angry guys.
Charlie goes to war with his garbage man.
Charlie becomes paranoid after discovering he's dating a private investigator.
Charlie falls into Jordan's trap when she sets him up with a heartbreaker.
Charlie finds himself in a contest with a female private investigator to prove that he could cheat on her without getting caught.
Charlie's life is taken hostage by a controlling techy girl.
Charlie tries to teach Nolan how to be more assertive but Nolan takes the meaning of standing up for himself a step too far.
When Sasha's opening of a halfway house is delayed, Charlie agrees to let her five hookers stay at his house.
When Patrick is having a major crisis over a job interview, Charlie tries to help him out.
When Lacey thinks her parents have lost the family fortune she gets engaged to a creepy billionaire.
Charlie almost destroys Ed's marriage and Jordan hits on Nolan.
Charlie goes to Vegas and life gets complicated after a night of heavy drinking.
Charlie tries to keep up with his new girlfriend who loves taking risks, the wilder the better.
Jordan's ex-husband approaches Charlie to offer to invest in a string of prison clinics with them, only problem is Jordan hates his guts.
A non-traditional therapist specializing in anger management thrives on the chaos in his life - while still battling his own anger issues.
Charlie and Sean are set up with the wrong dates from a matchmaker.
Charlie interferes with Lacey and Nolan's love life and gets Nolan kidnapped by prisoners.
Charlie's father sets him up with a hot, but quiet Catholic girl who turns out to be too wild, even for Charlie.
Charlie and Jordan hire a hot tie-breaker to work as their associate on the prison clinic program.
Charlie has to make a decision between keeping his group and being a sports psychologist for a baseball team.