I'm impressed with it, and since I hate everything it must be really good!

I tired the few games I had on hand just to test compatability:
Daytona USA 2k1: .... played at fullspeed.... seemed to have some control issues ... no grpahical glitches save some menu issues
DOA2 LE: Played Flawlessly
Gauntlet Legends: Ran at about 95%, otherwise perfect.
MVC2: Flawless
SFIII: Flawless
MK4 G: Flawless
Soul Caliber: Some Minor Texture issues and the menus look awful, but otherwise fine
Space Channel 5: Too slow to be playable (still at around 95% but where iit's a rythm game, that isn't good enough)
I had some images that it didn't seem to like, namely Cannon Spike and Samba de Amigo.... but I think it was more the disc format they were saved in rather than the emu itself. I'll convert them later this week and get back to you.
Pretty much all the "good games" on the DC seem to work, so everyone should download it and enjoy!