CSI (Crime Scene Investigation)--the original--has been my favorite drama since it came out, about five years now. It has won several Emmy Awards, and also Golden Gobe, and has spawned the CSI: Miami and CSI: New York series.
It's intelligently written, medically accurate in most cases--from what I can tell
(although they do mispronounce a few words here and there LOL)--and can sometimes keep you guessing up to the very end--especially when they throw in a new "clue" at the very end no one could have ever known about.
And another big plus, in my opinion, is they don't clutter up the scripts with all kinds of personal melodramas going on between the main characters. I don't think a good series needs soap opera type affairs, sub-subplots, etc. going on between the characters. They concentrate on what they do best--doing their job and solving crimes. Great show!
Here's a synoposis from Amazon:
Based on real life Las Vegas crime scene investigators, CSI: CRIME SCENE INVESTIGATION follows the team as they solve chilling cases with innovative thinking and methodical scientific inquiry. Tackling cases peppered with grisly details, the Las Vegas PD Criminalistics Division is the #2 crime lab in the U.S., solving crimes that practically every other crime lab has given up on.