Welcome to Two and a Half Men, Jason Alexander. See the former Seinfeld star as Alan's doctor in this CBS promo.
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Alan enters a mental hospital this week, as previewed in this CBS trailer for Two and a Half Men. Watch now.
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Joe Manganiello is featured in this clip from Two and a Half Men. He's awkwardly dating Walden's ex-wife.
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Alan is in charge of Jake on "Big Girls Don't Throw Food." Check out the official trailer for the episode now.
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It's the second half of the Two and a Half Men premiere event. As you can see here, studio audience members are excited!
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Two and a Half Men Season 9 Quotes

Walden: Trust me, money doesn't buy happiness.
Alan: I wouldn't know, I've never had either.

Just like old times. I'm talking and you're in a bottle ignoring me.

Alan [to urn]