Charlie's relationship with Angie is jeopardised when he meets her son's fiancé and realises she is his ex. Things get worse when the ex tries to hook up with him again, ultimately causing his breakup with Angie.

Charlie discovers an ex has a child that looks remarkably like him.

Alan goes too far in effort to collect $38 he loaned to Charlie. Meanwhile, Evelyn arranges a job for Jake.

Sheldon and Amy await big news.

In the series finale, the gang travels together into an uncharted future.

Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins by showing them that as much as they know about science, they know little about actual living.

Monica considers a dream job in Pete's new restaurant. Joey and Chandler adopt a baby chick and a duck and Ross misses a panel for the Discovery Channel to help Rachel, who may have a broken rib.

At the premiere of Joey's big play, Ross alone concludes Rachel's date is insane. Joey falls in love with Kate but she gets a big job in Los Angeles and poor Phoebe is on hold for days with a company she needs to talk.

Afflicted with a mysterious skin condition on his butt, Ross seeks advice from Phoebe's herbalist. Phoebe can't choose between dating a fireman or a schoolteacher and Monica can't decide what to do about Pete.

Monica must decide her future with Pete when he won't give up on competing in an Ultimate Fight. Chandler has a problem with his new slaphappy boss and Phoebe sets Ross up on a date with a woman who used to be bald.

Charlie's relationship with Angie is jeopardised when he meets her son's fiancé and realises she is his ex. Things get worse when the ex tries to hook up with him again, ultimately causing his breakup with Angie.

Charlie discovers an ex has a child that looks remarkably like him.

Alan goes too far in effort to collect $38 he loaned to Charlie. Meanwhile, Evelyn arranges a job for Jake.

Sheldon and Amy await big news.

In the series finale, the gang travels together into an uncharted future.

Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins by showing them that as much as they know about science, they know little about actual living.

Monica considers a dream job in Pete's new restaurant. Joey and Chandler adopt a baby chick and a duck and Ross misses a panel for the Discovery Channel to help Rachel, who may have a broken rib.

At the premiere of Joey's big play, Ross alone concludes Rachel's date is insane. Joey falls in love with Kate but she gets a big job in Los Angeles and poor Phoebe is on hold for days with a company she needs to talk.

Afflicted with a mysterious skin condition on his butt, Ross seeks advice from Phoebe's herbalist. Phoebe can't choose between dating a fireman or a schoolteacher and Monica can't decide what to do about Pete.

Monica must decide her future with Pete when he won't give up on competing in an Ultimate Fight. Chandler has a problem with his new slaphappy boss and Phoebe sets Ross up on a date with a woman who used to be bald.

Alan, Jake and Charlie all decide to try new things. Alan is dating more than one woman, Charlie learns to cook and Jake experiments with beer.

Alan is sure that things will turn bad when Charlie starts dating his receptionist.

Upon discovering Miss Pasternak, Jake's former 5th-grade teacher, turned to stripping after their fling, Charlie tries to help her turn her life around.

Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.

Leonard asks a woman out after he finds out that Penny is seeing someone.

Getting fired forces Sheldon to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.

At the beach, Phoebe meets a family friend with links to her past; Ross discovers Rachel still loves him; strip poker leaves Joey naked; Chandler wonders why Monica doesn't think he's serious when he asks her out.

Ross chooses between Rachel and his girlfriend Bonnie. Phoebe struggles with the revelation of her mother's friend being her real mother. Monica gets stung by a jellyfish, forcing Chandler and Joey to relieve her pain.

Phoebe believes her adoptive mother's spirit resides in a cat that jumped into her guitar case in Central Perk. Monica goes on a date with Rachel's hunky high-school boyfriend and Joey takes stupidity to a new level.

Monica caters a party for her mother who still doesn't know how to talk to her daughter. Chandler's encounter with Rachel's boss leads to an embarrassing situation and an encyclopaedia salesman takes advantage of Joey.