What kind of ethnic? That is pretty vague... Chinese, Japanese, Mexican, Turkish, Middle Eastern, Salvadorean, Colombian, Burmese, Thai, Vietnamese???
Price ranges would also help; you can get amazing seafood at Farallon, Anchor & Hope, or Bar Crudo if you aren't concerned about a budget.
And what are you looking for in the way of atmosphere? Club scene? Live entertainment? Decor? View?
Chinese - Hong Kong Lounge (dim sum)
Japanese - Tanpopo for noodles, Sushi Aka Tombo for sushi
Mexican - Colibri
Turkish - Troya
Middle Eastern - Aziza (Moroccan)
Middle Eastern - Zare (Persian)
Burmese - Mandalay
Salvadorean - El Salvador
Colombian - El Majahual
Thai - Lers Ros
Vietnamese - Slanted Door