Amazing thai place, that serves more than simply thai cuisine. My favorite dish there (to be fair, I have never tried anything other than this same dish) is the General Tso's Chicken, which isn't a traditional thai dish. I always order my food "Thai Spicy" which clears up your sinuses, but it's exactly the way I want it. They are the only Asian restaurant I've found that will actually listen when I tell them to hurt me, spicy food wise.
The place is run by a family. The server during the lunch is usually the son, who is extremely nice (he left the restaurant to help a guy in a wheel chair struggling in freshly fallen snow!) and the mom is usually back in the kitchen pumping out the food orders. They're quite a team!
I've moved away for school, but am back in CU a lot and always make it a point to hit this place up when I'm around. During the dinner hours, as with many Asian restaurants the food isn't the cheapest (still, very fair for what you're getting) but the lunch specials are fantastic. My favorite lunch dish runs about $7.95, which is a couple bucks off the normal price.
Little hole in the wall place that you'd never guess would be as amazing as it is.