Hmm, it was a tough one. I went with Jason Segel cause he is consistently funny on HIMYM and was great in Sarah Marshall (writing and acting).

This was tough. Eventually went with Steve Carell, but could easily have chosen Jason Segel for the reasons Zivanod states above.

james franco was HILARIOUS in pineapple express! all the rest were good too, except steve carell, that movie wasnt even funny!!

I went with Seth Rogen, but if I had two votes the second would go to Russell Brand. He cracked me up every time he came on the screen in Sarah Marshall.

Robert Downey Jr. all the way. He's true talent! Next was Russell Brand

Most of the laugh out loud moments in 'Zack and Miri' was due to Craig Robinson. I love him in the 'Office' as well.

I chose Robert Downey Jr because I thought Tropic Thunder was absolutely hysterical. But it was close with Jason Segel. He was so funny in Forgetting Sarah Marshall.

Russell Brand, Paul Rudd or Jason Segal. Too hard to choose

I heard that tropic thunder was racist and full of low-brow humor and didn't see it because it got so many bad reviews.

I really like Paul Rudd!

RUSSELL BRAND. definitely, never ceases to make me laugh.

other: Robin Williams

I love, love, love Craig Robinson and Steve Carrell but I had to go with Robert Downey Jr. NOt only was he funny in Tropic Thunder, but Iron Man aswell.

Paul Rudd. But Franco in Pineapple Express really pleasantly surprised me.

Sad to say, I am so over the Seth Rogen thing.

Robert Downey Jr. with Franco in a close second.

I chose RDJ because I loved Tropic Thunder and Iron man!

James Franco was amazing in Pineapple!

QUESTION to Gregwashere what was Robin Williams in this?

James Franco is such a comedic gem! His funnyordie.com videos always get me. And he's rather easy on the eyes as well

Hard choice, but I went with RDJ b/c I love him and am so glad that things are going well for him again.

This was Robert Downey Jr.'s year. I loved Iron Man and Tropic Thunder.

Gotta go with Craig Robinson! I absolutely loved him as Darryl on The Office and he was hilarious in Knocked Up, Zack & Miri and Daddy's Little Girls. Whenever I see him in a movie, I know a good laugh is always gauranteed. It's so good to see a refreshing new face on the comedy scene.

Steve Carell! I loved Get Smart and everyone that I saw it with enjoyed the movie. We were laughing all the way to the end.
I appreciate that the humor is for everyone, it's not offensive or anything like that. Steve Carell was great in it.

i LOVE russell brand. i know that a lot of people didn't like what he did at the VMAs and i don't think that it was the best representation of him - but otherwise - i think that he's really funny!

Steve Carell, for sure!

Paul Rudd He always makes me laugh

I can't stand Russell Brand, he's not funny at all.

RUSSELL BRAND IS GOD.

Hands down, RDJ. He was unbelievably hilarious in Tropic Thunder, but it was also great acting.

I said RDJ, because 2008 was his come back year. he was funny in Tropic Thunder and can't wait to see Sherlock Holmes when it comes out. There are a lot of good actors on this list, Paul Rudd was good in Role Models and Will Ferrell is always funny.

Michael Cera, I haven't seen Nick and Norah's Infinite Playlist but he was hilarious in Juno so I doubt he was anything less in that.