Multi-screen screensaver

Are there any good multi-screen screensavers out there for 2 monitors?

Any free ones?
Slideshows?

I am currently running windows7 and found that its photoscreensaver is rather weak. Only works on one screen and has 0 transitions. Only thing you can adjust is the speed.

WinXP screensaver was much better, almost wish I could find a way to install that to my system but not sure that would work, or would it? If so, how?

Thanks once more for all the great help!