The sometimes reliable Latino Review have apparently learnt from inside sources that Marvel have both Jim Carrey and Adam Sandler on their radar for unspecified roles in Guardians of the Galaxy. The company are supposedly looking to nab a famous comedic actor or two to fill the roles of Groot and/or Rocket Raccoon.
In less exciting news, the hunt for Star Lord marches on as Wes Bentley, Chris Lowell and Cam Gigandet are all being considered for the lead role.
I'd just like to add, that I'm a fan of the idea to get a couple famous comedic stars in. This light-hearted tone they seem to be aiming for would be a perfect fit for this team.. but for the love of God, keep Adam Sandler as far away from this project as possible!