Quote Originally Posted by olstyn View Post
Good ones nobody else has mentioned so far:

Farscape
Firefly

(Unfortunately, both are no longer running, but are available on DVD and worth checking out if you like sci fi at all.)

Everybody else has covered most of my other favorites:

24
Heroes
Bones
NCIS
Dirty Jobs, Mythbusters, various other shows on Discovery

I'm not a fan of the various CSIs, because most of the science is pretty obviously bogus. Bones does a much better job with the forensics, and NCIS doesn't delve as deeply into that aspect of things, thus avoiding making as many screw ups. Both approaches work better with knowledgeable audiences than the CSI way.
I'm a big fan of firefly, but have not checked out farscape. One that I just finished watching not too long ago was Persons Unknown. It was pretty enjoyable.