I think it's pretty rad Snoopy got his own XBLA game. I may have to try out the demo (if there is one). Yeah, games like Doom just don't hold up well these days, but the nostalgia factor of old games is always pretty cool.
 
Ha, man. That sucks you deleted your Crackdown save file. While I found it to be a pretty decent game, I don't know if I'd hunt down all the orbs again after having collected so many the first time. However, keep this in mind. It'sif you use a guide the whole time, it's easier to find them and follow the guide. Let's say you had 250 out of 300 (I think there was 300 total, but I could be wrong). For those other 50, you're going to have to go to all those old spots using a guide anyway, unless you can specifically remember that one (but odds are you'll remember one you actually never got, so you'll skip it, or you'll thing you're at the spot in the guide and won't see it and will think you got it already when in actuality you just now overlooked it. So... a fresh start is truthfully the best way to go...

Purchased Doom 2 and the Snoopy Flying game on XBLA.  I think Snoopy is fun, but I have been coming across some lag issues in the gameplay.  Other than that, it's the closest we are going to get to a Crimson Skies experience this generation is looks like.   Doom 2 is OK but it reminds me why shooters aren't made like that anymore.  I went through the new campaign on normal just to get the space marine avatar award.  I was getting pretty pissed, even on that difficulty.  
Also played through the first 3 levels in Rocket Knight.  Pretty fun action platformer, and well worth the money.
 
Also re bought Crackdown to get the rest of the secret orbs I lacked and I no longer have the save data. Shit. Chances of me restarting the game? Slim to none.  Oh well.