I use "switcher" which is great but is quite outdated so it stops working from time to time, plus it has some minor flickering issues.
I think Stardock could do a really nice Exposé clone given that the company has quite some experience in the Aero modding area.
Exposé is realy useful and visually neat if you ask me, much more than any 3D flipbook or any other task switcher alternative. Is just so easy to go to the corner of the screen to invoke it.
