There is a dearth of good, consistent Southeast Asian food in the Peninsula area. For a long time, Shanna Thai (Mountain View) and Lotus Thai Bistro (Palo Alto) were my standbys but both were inconsistent. Shanna Thai could be too sweet - and every waiter had a different interpretation of what "very spicy" meant. Lotus Thai Bistro was very consistent on the spice level but their menu items ran the range of very satisfying to not worth eating.
After a particularly horrible dinner at Shanna (dishes were watery and unevenly heated, the curry tasted like fish sauce and nothing else).
Enter Tommy Thai. The menu is very large - and I've only eaten from the first two pages (Cambodian Specialties and House specialties) - but I would say the food is flavorful, well-balanced and satisfying. A very emphatic "yes we can take it VERY spicy" did the trick on the spice level (this results in a lot of the small chilies so don't do so unless you can handle it). The ingredients taste fresh. The flavors between different dishes are unique - it's not one size fits all sauces. The Cambodian stews are very different from the Thai curries I normally get. The Salaw Machou Ktis with its combination of funky, green and sweet flavors is particularly unique and well-done.
So, I would definitely give Tommy Thai a try if you are craving good Southeast Asian food and are in the area.