I'd save it for the one and only Castle Crashers. It's too awesome to miss. And also Doolittle by the Pixies for Rock Band when that is made available.
I wold buy that one real expensive game.... Something with penny's. But I would love to see the game Cheapy mentioned, You know where you can pee on wombat... or wait is that only on urinals. But don't worry Wombat, if I do get them I will not spend them on Ninja Gaiden costumes.
I'd use the points for Bionic Commando: Rearmed, and some miscellaneous DLC (most likely the Army of Two map-pack, or CoD4 map-pack, so I can actually play with my friends online for a change).
I am going to pick up rockband soon, so I need points for the dlc. Also save some for the Street Fighter: Super Mega Alpha Omega Jumbo w/ Cheez Remix HD
I would definitely put the points towards one of the expansion packs in Oblivion (seeing as I just got it... HELLO 2006!) and maybe some horse armor for the hell of it.
I would buy some episodes of Rob & Big that I missed in the last season. Pac-Man CE or save for Bionic Commando. Maybe some Kung-Fu Panda pics; I really like Pandas
I would buy tons of the worst gamer icons and dashboard wallpapers then when my friends are like "WTF is with the Barbie Horse Adventure wallpaper!" I'd go off on how it's the most under-rated game ever and clearly better than whatever "trendy crap" (GTA IV, CoD4, Etc) they're currently playing
I'd definitely use them for Rock Band songs. I don't know what's wrong with me, but I'll buy any DLC for that game, regardless of whether or not it is good or if I've even heard of it before. Hopelessly hooked.
I would have to buy N+ because that demo just makes me want more, and the Legendary map pack.
Alternately, the legendary map pack for myself and the friends I play with. Just to expand our playing fields and give all somewhere more to play. That would be fun.