I've currently got a photo feature on the food of Luang Prabang at the Lonely Planet website. The old place is a great destination for food and I'd recommend it highly to anybody currently in the 'hood.
I'm currently in Phnom Penh, also something of an interesting food destination. Phil of Phnomenon has been gracious enough to take me around to the city's best markets and restaurants and I've been having a great time. Will definitely post some pics and info when I get back to Bangkok at the end of the month.