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

It's time for you, TV Fanatics, to choose your top CBS star! We'll be conducting surveys among fan favorites from across the network. The concept is easy: Pick your favorite of the two pairs in each poll. That's it!

Mark Harmon and Jon Cryer started us off, followed by Chris O'Donnell and Kaley Cuoco, Simon Baker and Kat Dennings, Julianna Margulies and Michael Emerson and Jim Parsons and Pauley Perrette.

On tap today? Our #6 seed, Mike & Molly's Melissa McCarthy, against #11 Alex O'Loughlin of Hawaii Five-O! Which actor do you love most? VOTE, then check out the full CBS bracket below:

And the Winner is?

Melissa McCarthy

Click Here To

Vote for Melissa

Alex O'Loughlin

Click Here To

Vote for Alex

Melissa McCarthy or Alex O'Loughlin: Which CBS star do you love more? Cast your virtual ballot here 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 still to come: #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.