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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Two and a Half Men Season 9 Episode 23 Quotes

I try not to insult people who can come back and haunt me.

Berta

Alan: Hello, Doctor.
Cardiologist: Well, I have got some good news .
Alan: Well, let me have it.
Cardiologist: I am banging my receptionist.