For me, it's gotta be the "I can't stop gloating" bad guy. He's finally got the good guy at bay. All he has to do is pull the trigger and it's 'Goodbye Mr. Bond.' But no. First, the smug, gloating, self-congratuatory speech. "For too long you have foiled my designs, but now we know who's vision will be rewarded by..... Invariably this gives our hero time to come up with a cunning plan to turn the tables, or time for the sidekick/heroine to knock the baddie over the head with a heavy prop.

They had a term for it in The Incredibles. They called it "monologuing."

"He starts monologuing! He starts this, like, prepared speech about how "feeble" I am compared to him, how 'inevitable" my defeat is, how "the world will soon be his,' yadda yadda yadda. "

Love that movie.