If I could eat at Tenpenh every night I would!
The people who own DC Coast and Ceiba (two of my other favorites) somehow got things just right at Tenpenh. They always have small surprises like a sampling of soup or a small appetizer between courses. The desserts are also amazing. But I must say that the number one, not-to-be-topped item on the menu is the red Thai curry shrimp, a pineapple/coconut curry concoction that will knock your socks off with flavor.
Try tenpenh for your next birthday or special occasion. It's right at the corner of Tenth and Pennsylvania downtown. They also have gift cards that you can order online that can be used at any of the three sister restaurants.