It has been reported that Elijah Wood, star of The Lord of the Rings Trilogy, will be making an appearance in the upcoming film, "The Hobbit". The two part film series will have scenes with Wood's character, Frodo, in both.
While Frodo Baggins does not appear in the book, the script for "The Hobbit" does include him. Supposedly he will appear in the film as Bilbo tells Frodo of his experience.
"The Hobbit:Part 1" is scheduled for release in 2012.