Humour's a very subjective thing, obviously. Take, for example, these two iPhone 4S announcement parody videos. I think one of them's gut-bustingly funny, while the other just draws a simple yawn out of me.
The Banned iPhone 4S video? Even though I don't entirely agree with it, to borrow an Apple phrase, it's Genius. The Siri-ously video? Must try harder. What's your opinion?