Here's another thread from a while back with some eating recommendations:
http://eccie.net/showthread.php?p=10...post1055113030
If you like sushi, I recommend Sushi Saki. Not the most upscale restaurant, but their fish is usually pretty fresh:
http://www.urbanspoon.com/r/11/14221...hi-Sake-Austin
Musashino Sushi is another good sushi joint:
http://www.urbanspoon.com/r/11/14159...-Dokoro-Austin
Star of India is a nice little Indian food place not too far from the Domain:
http://www.urbanspoon.com/r/11/14215...f-India-Austin
And Clay Pit is a good but pricey Indian place downtown:
http://www.urbanspoon.com/r/11/14051...lay-Pit-Austin
La Casita is another place not far form the Domain. Inexpensive and they serve pretty good traditional home-cooked Mexican food:
http://www.urbanspoon.com/r/11/14123...-Casita-Austin
Changos is closer to downtown and has some tasty fish tacos (haha):
http://www.urbanspoon.com/r/11/15576...aqueria-Austin
Here's mrhamm's ATX hobby map (Domain and Arboretum seem to be the most popular areas with hobbyists) and the thread discussing it:
http://www.eccie.net/showthread.php?...777&highlight=