There are a few sucky ones, but there's a bunch that kick ass. Raleigh, Scotsdale, Austin, just to name a few. They're clean, nice, computer room, pilot room, lobby, etc.
Better than terminals. That's one of the biggest reasons I have 0 desire to go back to the airlines. I hate terminals, I think they're dirty, and crowed. Tag on to that TSA, yuck.