I might re-buy Beyond Good and Evil for Gamecube... if I can find it in good shape, or at all. I never should have traded it in, considering its fairly hard to find the GC version now. I wish the Xbox version worked on the 360.
I went ahead and did this. I found a single used copy at a far away store (that I was traveling by tonight anyway) complete and in great condition. After coupon and Edge it was $8.99 (normally $14.99).