A ubiquitous chain of Thai restaurants found all over Tokyo. Nothing fancy but you get all the staple Thai dishes at a reasonable price. If you happen to be in the vicinity then the one in Aoyama / Omotesando which is located in the basement, has a nice deal for lunch. You have to order a main dish (¥1230 ~ ¥1360 on weekends) after which you can help yourself to a small buffet spread comprising of salads, soup, stir fried veggies & red/green curries with steamed rice. Definitely great value for money !
A minutes walk from the Omotesando Subway station, Exit B3.