Issan is northern and eastern Thailand. The cuisine has heavy Lao influences. Kai yang (grilled chicken), somtam(papaya salad) and khao neow(sticky rice) is a classic Issan lunch. It also features other grilled meats, sausages and curries. One of the latest crazes is the khao soy metioned in the other post. It's a Chiang Mai thing. While in Bangkok, stop by MBK Center, at the National Stadium Skytrain Stop. They have a huge foodcourt on the 6th floor. It's a "tame" introduction to Thai hawker food. For a great dinner cruise, book #3, Riverside Bangkok's. For under 500 baht ($11), you'll have your fill of great food and a wonderful cruise. It's the only cruise that cooks food to order, on board. Drinks might set you back a little more. On the same webpage is Yok Yor Marina, #12. Here you will find great Thai/Chinese and a fantastic show, featuring traditional dance and martial arts. If you want a place that's nice, but not pretenious, try Anna's Cafe, 118 Soi Saladaeng, Silom. It's a bit of a "fusion" thing. Their desserts are great! Try the coconut ice cream with sweet sticky rice; simple but wonderful! The real beauty of Bangkok dining is that you really don't need to "know" the cuisine. The best food is always the hawker stalls that line the streets everywhere. They always cook what they cook best. Simply follow your nose. Like I said, hit MBK foodcourt first. After you realize that you can survive this type of food, hit the streets and sample the really great stuff. Have a blast!