I've never preordered a game before Scribblenauts, but this was a perfect storm of reasons...
1) The game looks awesome. Sure, it might not have the tightest gameplay or best graphics - but the concept is incredible and (as far as I know) completely new. Just messing around on the sandbox title screen looks priceless.
2) I'm never in on the "hot new thing" for gaming, but this time all the hype got me really excited. DS games aren't that expensive, and it's coming out right by my birthday. So why not be part of the fun from day one?
3) My wife might actually play this game. She usually prefers animal crossing or farming simulations... but this could easily catch her imagination.
4) I moved recently and really like the EB Games staff nearby. (A couple of really helpful, friendly, cute chinese girls? What's not to like?) The preorder looks good for them, and ensures I'll actually have a copy in stock.
So who else is planning on getting the game when it comes out?