Thai Angel greets you with a simple, clean, somewhat dark, but uncrammed interior, and offers great Thai food at very reasonable prices. I had the tasty Pad Kee Mao noodles for $6.50 at lunch ($7.50 for dinner). The most expensive dishes range around $13-17.
The restaurant has a large menu including all the standard Thai noodle and rice dishes, and a good number of vegetarian options. Though not exactly my favorite, even exotic items such as frog's leg can be found on the menu.
I don't know if reservations are recommended. I went there for a late lunch, and it was pretty empty. For a larger party, I'd call ahead.