If you like Dim Sum, be sure to swing by Hong Kong in Durham, off Guess Road. If you take the Guess Road exit off 85 (northbound), turn left, go back under the interstate, and it's a couple of intersections up on your left. Standalone building, looks like a house. You can order dim sum off the menu during the week, and on the weekends, it'll be on carts with a couple of extra weekend-only items. We've ordered off their menu a couple of times as well. Very good noodles. Probably the best dim sum I've had in this part of the country, to be honest. Definitely better than Neo-China in Cary.
Oh, and if you go on weekends, get there early! They start serving dim sum at 11:00, and parking is very limited. Price-wise, it's not cheap (wife and I average a check of between $25-$35 each time, but we always have a good-sized doggy bag whenever we leave), but it's very reasonable.