How about there is this countdown, and people are running around screaming. Its obviously tied to some sort of bomb. People are just going plain nuts. Then the countdown ends, and the box opens to show the N900.

OR

Same scenario, but in the middle of all the screaming, a guy casually walks to the bomb, pulls out a N900, and hacks the bomb to turn it off. Then its like "Nokia N900, it just saved your @ss!"

OR

How about GODZILLA attacking, and a kid pulls out his N900 and blasts some tunes. And then the onedotzero stuff goes everywhere and they all party like its 1999! WOOOOHOOOO! Okay, I really need to do my work...