Oh Look! Al-Qaeda!
Jake is pressured to make a decision about his future.
The Straw In My Donut Hole
Alan is showered with love and affection upon returning from the hospital, but Zoey isn't so sure it's deserved.
Why We Gave Up Women
After Alan suffers a minor heart attack, Charlie's ghost pays a visit to his hospital bedside.
Mr. Hose Says "Yes"
Walden's commitment is tested when Zoey and her daughter come to live with him. Meanwhile, Alan gets more than he bargained for when he moves in with Lyndsey.
Walden breaks the news to Zoey that he is going into business with his ex-wife. Meanwhile, Alan and Lyndsey try to come to terms with their moms' new relationship.
The War Against Gingivitis
Things get tense in the Malibu house when Walden's estranged ex-business partner shows up looking to bury the hatchet.
Not In My Mouth!
A near-death experience has an adverse effect on Zoey and Walden's relationship; Alan thinks Lyndsey may have a drinking problem.
Sips, Sonnets and Sodomy
Strained relationships and girl-fighting result when a huge storm traps Walden, Alan, Zoey and Lyndsey in the house on Valentine's Day.
The Dutchess of Dull-In-Sack
Walden tries to loosen up Zoey by sharing a couple of Berta's special brownies.
A Possum on Chemo
Zoey tries to coerce Walden into cutting his hair and shaving. Meanwhile, Alan and Lyndsey rekindle their relationship.
Slowly and in a Circular Fashion
When Walden's mother (Mimi Rogers) and ex-wife (Judy Greer) try to take over his company, he turns to Alan for help.
One False Move, Zimbabwe!
Walden's mother arrives and Alan is smitten with her, even as she reveals a secret about Walden's past that sends him into a downward spiral.
A Lovely Landing Strip
Walden is trying his best to impress his new love interest when Bridget reappears in his life.
A Fishbowl Full of Glass Eyes
Walden hits it off with a British babe, but neither of them is sure he's ready to re-enter the dating world.
Upon his release from the hospital, Alan is met with a slew of challenges that test his ability to cope.
Thanks for the Intercourse
When Walden begins redecorating the beach house, Alan becomes overly emotional.
People Who Love Peepholes
Walden's ex-wife, Bridget (Judy Greer), turns up.
Nice to Meet You, Walden Schmidt
Ashton Kutcher joins the cast as Walden Schmidt, an internet billionaire with a broken heart.