depends on if you are just out for a good time or wanna do tourist type things... tourist stuff in dallas---west end market---food and live entertainment....the new aquarium and JFK 6th floor museum, new cowboys stadium (irving)....houston---rodeo (in feb). go to galveston (45 min south) Austin---lots of live music, capital tours, UT games, 6th street clubs.... all depends on what you re lookin for.
Go to the Dallas Aquarium...it s pretty nice. Also, if you get the chance GO to this place in Dallas called Sprinkles. They have the BEST cupcakes.