The hound of the Baskervilles, with the Holmes who was on TV when I was a kid. Jeremy Brett, best Sherlock Holmes...ever!
Now, modern SH. Sherlock, or Elementary?
Personally I prefer Sherlock. The whole Lucy Liu thing ruined Elementary for me. I can see why they think making Holmes a woman is modern and PC, but to me it seems like a cheap TV tactic, adding sexual tension, and a Mulder & Scully will they/won't they thing,that simply does not exist in the source material.
EDIT
Thank You to Weezard for pointing out that I had posted this. /durrrrrrrrrrrrrrrrrrrrrr