The thread that keeps on giving. Long after stfudonny has died and moved on, it's still going.
Generally if I've paid to see a film on the big screen I'll sit it out no matter how bad. But I have fallen asleep a few times. Phantom Menace, Pirates of the Caribbean (the FIRST - I would never make the mistake of seeing one of those in a screen again) and Robin Hood. Dozed a bit during the last boring battle.