18. Tekken 5 - Panda Ending
http://www.youtube.com/watch?v=UxcJitgkzk0 In retrospect, the final cutscene for a character that's literally a Panda in a Japanese fighting game was never going to be totally grounded in reality. This bizarre sequence completely defies explanation though. Just watch it.
17. Portal - Still Alive
http://www.youtube.com/watch?v=1zZZJm6pWQ0 Sure, it's cool seeing the outside world after spending so long cooped up in testing chambers. And it's a nice to finally witness the cake in all its moist glory. The real reason this one is here though, is for the closing music, in which GLaDOS reveals she's "still alive" in song form.