450A Irving Street
(between 5th and 6th Ave.)
If you work or live near UCSF, you probably already know about this place. Me, I heard about this from a friend and ventured over to taste what I thought was going to be a Thai restaurant. Turns out this is more than just Thai food – LimeTree serves a combination of Thai, Indonesian, Malaysian, and Singaporan (?) and Filipino dishes at decent prices.