1. "I Did Not Hit Her! I Did Not! Oh, Hi Mark"
Here he is again at number one. Tommy Wiseau's notoriously unconvincing hissy fit on an apartment roof in The Room is amazingly awful, and whilst it has absolutely no right being memorable - it is just too funny to forget. Watching The Room is one of the strangest viewing experiences of all time. First you're incredulous, next you're tickled, and before you know it you're telling all your friends about it. Everything about this line is spectacularly bad, from the cringe-worthy delivery to the laughably abrupt digression. Wiseau storms up to the roof, shouting at nobody in particular, throws his water bottle, and then spots his friend Mark sitting up there. He shifts gears from furious to friendly in a second, and the result is simultaneously incredible and terrible.