In Houston...
Luling Street, Pappas or Goode company...there are a few "hole in the wall" places, but I can never remember the names, just know how to get there.
Best to get the sauce on the side.
Oh, if you have time go up to Huntsville (1 hour north on I-45) to Mt. Zion Baptist church (most call it BBQ church) for all you can eat family style BBQ that will make you want to sing the gospel...