Well, I recently traded in a BUNCH of records I had in my basement from my prior EBay days and got nearly $180 in credit at Vintage Stock, then traded in a few NES games along with an extra Gamecube… the result being I had more than enough trade credit for a Nintendo Wii!
So, now I’ve added a Nintendo Wii to the game system collection… The wife and kids love it. It’s OK and fun enough I guess, but I haven’t seen anything on there that amazes me beyond the 360. I haven’t played twilight princess yet… but got side tracked after I popped it in and loaded a game save. 
With the addition of a Nintendo Wii at the homestead, look for some widening of the signatures scope beyond just xbox360 signatures in the coming weeks, especially since my personal roofing project is now complete.
In the mean time, check out the Dark Knight fan art signature created late last week. If you like one of the signatures there, go on over and create a Xbox360 signature.