The uhhhh... uhhhh... Six Flags in Dallas? Ah shit, there's on in San Antonio too. I'm sure there's something to do there but I've never cared to find out. Heard it has good food though.
Deep Ellum
Nice. Just Bing'ed (that's right, I'm going there) it and that seems neat. I don't know anyone in Dallas so I was never interested in finding out what was there. Only ever been there for the airport and work.
As far as the DFW area goes, here's what there is:
-Dallas Cowboys, Texas Rangers, Dallas Stars, Dallas Mavericks games
-Dallas Museum of Art, Trammel Crow Collection of Asian Art, Nasher Sculpture Center
-West End Marketplace, JFK Memorial, Holocaust Museum, Sixth Floor Museum
-Deep Ellum
-Dallas World Aquarium
-Fort Worth Zoo, Dallas Zoo [the former is one of the best in the country]
-Six Flags Over Texas, Hurricane Harbor
-Ft. Worth Botanic Garden and Japanese Garden
-Ft. Worth Museum of Science and History
-AT&T Performing Arts Center
-State Fair of Texas, Musuem of Nature and Science, Music Hall at Fair Park