Welcome back to the 1st annual Tournament of TV Fanatic!

Last month, after tens of thousands of votes cast, we crowned Supernatural's Jensen Ackles as your #1 CW network cast member. Now it's time for you, TV Fanatics, to choose your favorite CBS star!

We have chosen 16 of our favorites for this showdown - to be followed by NBC, Fox, ABC and other versions. The concept is easy: Pick your favorite of the two pairs in each poll. That's it!

First up? Our #1 seed, NCIS' Mark Harmon, against #16 Jon Cryer of Two and a Half Men! Which actor do you love most? VOTE, then check out the full CBS bracket below:

And the Winner is?

Mark Harmon

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Vote for Mark

Jon Cryer

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Vote for Jon

Mark Harmon or Jon Cryer: Which CBS star do you love more? Cast your ballot in the CBS edition of our first annual Tournament of TV Fanatic! View Poll »

We will post polls of these respective matchups daily, and then after each round, update the bracket as some stars advance, while others are eliminated, until the winner is crowned. Make sense?

It's easy, fun and all decided by YOU! Here's the Tournament of TVF CBS field:

First-round matchups to come: #8 Chris O'Donnell vs. #9 Kaley Cuoco; #5 Simon Baker vs. #12 Kat Dennings; #4 Julianna Marguiles vs. #13 Michael Emerson; #3 Jim Parsons vs. #14 Pauley Perrette; #6 Melissa McCarthy vs. #11 Alex O'Loughlin; #7 LL Cool J vs. #10 AJ Cook; #2 Neil Patrick Harris vs. #15 Tom Selleck.

NOTE: If your favorite didn't make the cut, there will also be a wild card round, on top of NBC, Fox, ABC and miscellaneous (HBO, USA, etc.) brackets! Leave a comment with your nominations.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.