I've been fooling around last week with beryl on ubuntu.
Didn't think i would like it this much, normally i have all desktop effects turned off.
They ripped off expose too

Xen demo turning in XGL demo (and a little vista bashing):
http://video.google.com/videoplay?docid=2849258302734205565

Just a simple video showing off most functions of beryl:
http://www.youtube.com/watch?v=G3p8IBNNd88
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Empeg Mk1 #00177, 2.00 final, hijack 4.76