With no issues? really? I have an i7 920 at home, 6GB ram, etc, and when I tried to run Snow Leopard in vmware, it just never felt quite right. It worked, sure, but not to the point I'd be happy using it everyday.
Yep, I've used it as my sole development platform for 3 iPhone apps so far. I could never get 10.5 to run perfectly for me, but 10.6 seems to be issue free. (Well, the single issue I've had is Dropbox, for some reason it causes the kernel to crash, but I haven't bothered to look into it at all, yet.)
I'll have to take another stab at it. It'd be nice if I could get that working properly.