Two and a Half Men (2003)

Yes, Monsignor - S2-E9

Continuity mistake: Alan is sitting at the kitchen table talking to his son Jake about a math test on which Jake got a bad grade. At the beginning of the scene Alan holds the open test in his left hand. When the camera switches back to him a second later the test is now in his right hand. Finally at the end of the scene the test is back in his left hand but is now folded. (00:04:50)

Apologies for the Frivolity - S4-E6

Bobby the waiter: We haven't seen your mother here for quite some time.
Charlie: Well, maybe you just didn't recognize her. Like Satan, my mother can take many forms.

Trivia: The second TV series in which Charlie Sheen's character has been named "Charlie." The first was Spin City.

Show generally

Question: What's the name of the episode where Charlie and Alan are hiding in the Toilet and Alan says "Charlie" and then Charlie says "I told you it might take a while"?