Steal someones iPod, write down all the songs, delete them, duplicate "Never gonna give you up" thousands of times, tag all of them as the songs that were on the iPod before, transfer the songs back on. Hilarity ensues.
OMG, DUDE ... that's ... epic win. no question. but have you actually done it? my best idea was always "i found a video of you on youTube! here;" and so on.
My mate is very careful about looking out for Rick Roll's because he tries to get everyone with it. I caught him off guard by showing him a video of Chocolate Rain from YouTube and then sending one of a remix to it. He was going on about how he liked the original more so I said "What? Better than this?" and sent him 'Never Gonna Give You Up'. I'll tell you, I've never seen a man more demoralised