Charlie and Alan set their mother up with Russell, the pharmacist, on "Springtime on a Stick."
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Charlie and Alan set up their friendly neighborhood pharmacist, Russell (Martin Mull) with their mother.
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Rose returns to Two and a Half Men during the eight season to stalk Charlie and possibly ruin his relationship with Michelle (Liz Vassey).
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Charlie and Alan have a nice little discussion while Charlie enjoys a drink on Two and a Half Men.
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Krista Kalmus guest stars on Two and a Half Men as Shauna.
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Liz Vassey, of CSI fame, guest stars on Two and a Half Men as Michelle, an older woman that Charlie dates.
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Charlie Harper, not Sheen, gets plastic surgery on Two and a Half Men. Wouldn't shock us if the actor did too.
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Alan pretends to be Charlie and the owner of the most wonderful life on Two and a Half Men.
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Two and a Half Men Quotes

Charlie: You're like an Alzheimer's patient in a whorehouse.
Alan: What do you mean?
Charlie: You're constantly surprised that you're getting screwed, and you don't want to pay for it

Alan: What's wrong with him?
Berta: Classic case of va-jay-jay fever.
Alan: Colorfully put. I'm just surprised to see Charlie fall for it.
Berta: Sooner or later all men fall for it. How do you think I got my condo in Palm Springs?
Alan: You have a condo in Palm Springs?
Berta: No, figure of speech. Don't try to stop by.