LAX (Various terminals), as well as PHX
and some other airports: CPK (California Pizza Kitchen), The BBQ Chicken Pizza is the bomb, even if it is a little overpirced (CPK is even better at non- airport locations becuaes you get more for about hte same amount of money). Wolfgang Puck Expres is good too.
BTW in the international terminal all decent food (basically everything that is not a hotdog) is sold outside of security, they odn't have anything I really like [though I haven'ty had their daily grill but I've been to a few others and they are awesome], just a little warning for anyone travelling through the international temrinal.
Also even though this is at many airports, I find that I always end up going to Sbarro when at PHL
The new terminal has rather bad food in the main food court area (McDonalds, a McDonalds run pizza chain (I've only seen it at the airport and in a few McDonalds branded turnpike rest stops). However there is very good pizza in the terminal US Air uses (can't remember terminal letters or names).
Cinnabon is awlays good too, at least for desert or breakfast, as is Auntie Annies or Wetzels for a quick snack.
, in the terminal Jetblue uses there is a sportsbar, I recommend avoiding it, the service was horrible and the food wasn't that great.