Okay, I'm not from the States, so I don't watch the shows on CBS - but there are quite a few I do watch when they finally find their way across the ocean.
Shows I watch(ed) consistently:
Criminal Minds - simply love the characters although the show gets weaker nowadays IMO
Judging Amy - IMO they should have stopped with season 5 (and they never should have let Adrian Pasdar go, I thought the breakup was just poorly handled)
The Good Wife
JAG
Shows I stopped watching and/or caught late in the game:
CSI - stopped when Grissom left
CSI: Miami - can't stand Horatio (and the rest of the "team" isn't that captivating, either)
CSI: New York - just didn't fascinate me as much as the original one, but it's not that bad
NCIS - I'm getting caught up now with new episodes and reruns
NCIS: Los Angeles - started watching somewhere in the middle of season 1
Without a Trace - stopped watching when that 6th female teammember (name?!?) joined up
Eleventh Hour - lost interest way before it went off the air
Numb3rs - I watched the first 2 seasons but only intermittently afterwards
the occasional episodes
Cold Case
Close to Home
The District
The Guardian
Jericho
The Mentalist