Wavebird - Best Controller EVAR!!!
Except for the fact that it's a GC controller (damn those oddly shaped buttons!!!).
Seriously, the idea to make the controller work on cordless phone frequencies was FUCKING GENIUS! Sony and Microsoft HAVE to make something like this. Unfortunately, I only have one game for my GC right now (WMX8, which isn't even very good) since I already beat all the other (3, maybe 4) good games. If one of these is released for PS2/PSOne, I will be ecstatic. An X-Box one would be nice also, of course, but the Sony one would work for 2 systems, therefore making it more coveted.
I seriously urge you to check out this review http://gear.ign.com/articles/361/361933p1.html to see just how super cool this new toy is.