I like Casey Moore's, it's a cool place, and a good option for lunch and late night.
For lunch, the service typically takes forever. I've had 1.5-2 hour lunches because it's painfully slow. The food is pretty good and the drinks are strong.The best part of Casey Moore's is the vibe and the atmosphere. It's very laid back and a nice place to hang out.
I don't think it's the cleanest of places...One night I saw a cockroach in the tiled area between the bathrooms, which was nasty. There's definitely a dingy element to it, which isn't really my thing but maybe enhances the vibe.
It's worth checking out if you're in Tempe and tired of Mill.