When Sammy’s birthday party location suddenly falls through, the family rushes to set up the celebration in the backyard and is surprised by an unexpected guest. Also, Javier and Elizabeth…

When Adam catches Kate sneaking back into the house at night, he is determined to fix the behavior with old-school parenting tactics. Also, Andi is dismayed when she can’t find…

Depressed after his breakup from Courtney (Jenny McCarthy), Charlie goes to see his psychiatrist (Jane Lynch).

Alan feels paranoid when Lyndsey becomes friendly with Charlie.

Obsessed and believing her to be married, Charlie starts stalking Rose. Jake and Eldridge start taping themselves doing Jackass-style stunts.

While Charlie and Rose carry on their “affair,” Alan’s chiropractic business turns into a Ponzi scheme.

Rose and Alan discover each other’s secrets. Meanwhile, Charlie’s desperate to get some time alone with Rose.

When Berta takes a couple of days off, Charlie falls for her replacement. Meanwhile, Alan believes he’s being stalked by Lyndsey’s ex-husband.

When Charlie’s ex-girlfriend Courtney is released from prison, he treats her to the good life despite her having been in prison for conning him.

Alan goes to great lengths to be able to get Lyndsey a nice birthday present.

When Jake finds out that Alan has been dating Eldridge’s mom, he packs up and heads to Judith and Herb’s. Meanwhile, Charlie decides it’s time to cut back on boozing.

Charlie is willing to do anything for Alan to accept Lyndsey’s offer to move in with her.

After moving in with Lyndsey, Alan continues to have a rendezvous with Melissa at Charlie’s house.

Lyndsey and Eldridge move into Charlie’s house after their home burns down.

Alan pretends to be Charlie when he goes out on the town; Charlie sneaks off for cosmetic surgery.

Charlie has difficulty dealing with dating a slightly older woman.

Charlie’s girlfriend gets fed up with his stalker, Rose.

Charlie and Alan try to set up Evelyn with Russell the pharmacist.

Alan finds out that Lyndsey broke up with Larry without telling him; Walden tries to prove he is a man’s man.

Alan asks Lyndsey to choose between him and Larry; Jenny worries that she and Brooke are growing apart.

Walden thinks his girlfriend is cheating on him; Alan starts dating Larry’s sister, Gretchen (Kimberly Williams-Paisley).

Lyndsey finds out about Alan’s relationship with Gretchen; Walden has a difficult time telling Barry to find his own place.

After reconnecting with Kate, Walden becomes convinced she is the one for him — until he meets a woman named Vivian (Mila Kunis).

Alan’s girlfriend, Gretchen, insists he confess his true identity to Larry. Meanwhile, Walden goes on a road trip with Jenny and Barry to see his first car.

Alan must face the consequences after revealing his identity to Larry.

Lyndsey’s boyfriend sets Alan up on a date; Walden wants to help Nicole with her project so she will have time to date him.

Alan tries to find out what Lyndsey’s boyfriend has over him; Walden helps Jenny pursue her acting career.

When Alan learns Walden knows Lynda Carter, he asks him to set him up on a date with her. Against his better judgment, Walden agrees to invite her to the…

Walden and Alan find themselves on dates with two ideal women until Lyndsey’s jealousy throws a wrench in their evening.

Walden goes on a date with an accident-prone model; Alan’s date reveals surprising personal information about herself to him.

After a health scare on Halloween, Walden decides he needs to change his life.

Alan has second thoughts about getting married after he’s asked to sign a pre-nup.

Alan and Walden have a meeting with an adoption social worker that hinges on them being convincing as a loving couple. Lyndsey returns after 60 days in rehab.

A birth mother considers having Walden and Alan adopt her baby.

Alan is showered with love and affection upon returning from the hospital, but Zoey isn’t so sure it’s deserved.

Jake is pressured to make a decision about his future.

Walden and Zoey’s relationship suffers after they share a near-death experience. Meanwhile, Alan wonders if Lyndsey has a drinking problem.

Walden’s ex-business partner shows up at the beach house looking to make peace.

Alan and Lyndsey introduce their mothers. Jake and Eldridge get a ride from Walden to a party.

Walden breaks the news to Zoey that he is going into business with his ex-wife. Alan and Lyndsey try to cope with their mom’s relationship.