There are some good homebrews and emus on the dreamcast as well - which is another reason i keep going back to it.

A good site i use is snesorama.us Some of the stuff i have found on there i would never have thought you could do on a DC. Although emulation isnt perfect with some systems it feels better than playing old games on a PC (nice big tv and a brilliant controller!)

come to think of it i wonder what the situation of emulating an amiga on it is, if any!?