Endless Paradigm

Even though it does 'officially' support it yet, I've had no problems getting it to work with my Radeon HD 2900XT, plus with the ATi drivers being opened up now development should really speed up.

I've had a good experience with Beryl.

I did the cube rotation but from the inside which to me is alot better than viewing it from the outside.

The fade effects, glide in and out, window previews, transparency, etc

Too bad ESD claimed my nVidia card T_T