I'm stuck between Law & Order: SVU and Criminal Minds (:
Mine are the Jeremy Brett Sherlock Holmes series, the old Dick Tracy episodes (can find them on the web still), Columbo, and Monk. I'm also looking forward to the new detective show Psych on USA channel.
Monk is by far my favorite mystery show in the world!!!! OCD makes Monk who he is --and it also in alot of episodes had saved his life. :-D