Another vote for Cabbages and Condoms:
Name
Cabbages & Condoms
Address
No 10 Soi 12 (near Sukhumvit Road)
Bangkok
229 4610
Hours
11:00 - 22:00 Daily
Why
The restaurant is run by PDA (Population and Community Development Association). PDA runs a lot of projects for birth control, health care, conservation of nature, ...
The restaurant offers great Thai food at reasonable prices. My last visit was in 06/2002 where I had spicy chicken with Jasmine rice. Excellent! There's also a shop.