Via Entertainment Weekly:

Martin Freeman as Bilbo Baggins in THE HOBBIT

”He fits the ears, and he’s got some very nice feet,” Jackson says of his Bilbo. ”I think he’s got the biggest hobbit feet we’ve had so far. They’re a little bit hard to walk in, but he’s managed to figure out the perfect hobbit gait.”

That’s pretty much the Bilbo I’ve always pictured in my head. Freeman’s got the proper charisma and irreverence to give life to the iconic character. Love the dwarves hiding the in the background!