Hands down my favorite Thai place in CU. This little nook of a restaurant is surprisingly authentic - I believe it's run by a Thai family. The location is a bit sketch (in a motel parking lot), but the food is amazing and worth the trip out to bufu. The menu is traditional Thai dishes (none of that fusion nonsense), and if you ask for spicy they will deliver...It's a little bit pricier than the takeout/eat in Thai places around town and a bit farther from campus, but imho it's worth the trip out if you're serious about your thai food.
My faves from the menu are the pineapple fried rice, the duck dish and the mango/sticky rice for dessert.