Are There Any Sega Saturn Emulators?

I was wondering if there are any Sega Saturn emulators that run in Windows. If there are, which ones do you guys recommend and where can I find them?

Any help would be appreciated.
Their are Saturn emulators for windows, but none of them are very good, in fact, unless you have somthing like a 2.2Ghz with a Geforce3 or 4, you have no chance of running games on any saturn emu's at full speed.
Actually, what kind of graphics card you have is fairly irrelevant since none of the emulators use any from of 3d acceleration (yet).
Yea, Framerates being what they are they won't likely be sped up until later versions, and of course the fact that the Saturn hasn't ever been fully emulated yet.