T1B

http://www.doperoms.com/" onclick="window.open(this.href);return false;

Okay then...

http://www.romnation.net/srv/roms.html" onclick="window.open(this.href);return false;

http://www.rom-world.com/index.php" onclick="window.open(this.href);return false;

http://www.freeroms.com/" onclick="window.open(this.href);return false;

A massive archive of Nintendo DS games:
http://ds.rom-news.org/" onclick="window.open(this.href);return false;

Tons of Sony PSP games (if you run a custom firmware)
http://my.opera.com/webslave/blog/2008/01/06/giochi-psp" onclick="window.open(this.href);return false;

http://www.iso2psp.tk/" onclick="window.open(this.href);return false;

It has been a while since I've played emulators. They are certainly fun. Of course I have an N64, WII and PS1 at home too to give me my console gaming play, once or twice a month.