My favorite bar is Zombies, as well as Bond 007 hard rock café because of the badass music. Be careful at Zombies though. The bathroom has no lock and there is no toilet paper.
Near Culebra and 410, I used to hang out at the Cadillac Club. Fast Eddies down the street is a good spot for pool.
I think I Don't KNow Yet is on Babcock near 410. that place is cool.
Mustang Sallys is a really cool trashy place at Military and Roosevelt.
Texas T and Texan 2 are cool dive bars downtown.
A bunch of good dive bars in the Medical Center area.... my favorite would be the Highlander. The food there is excellent.