Hollywood news website The Hollywood Reporter quoted an unnamed source as saying Colbert would make a cameo appearance in the second Hobbit film, Desolation of Smaug, due for release on December 13 next year.
Colbert is a massive fan of Lord of the Rings, and he told Playboy magazine that he spent time in New Zealand this year to film his scene.
"Peter Jackson invited me to the set last year," he said in the latest issue of the magazine.
"I flew out and watched them shoot some scenes and went to some locations. I saw a 25-minute cut, and it was amazing.
"Jackson knows I'm a big fan of the films."
When asked if he was going to be an extra in the films, Colbert reportedly smiled and told Playboy: "Could be."
Another star who made a cameo in one of Jackson's Rings films is Flight of the Conchords' performer Bret McKenzie as the elf Figwit.
His fleeting appearance sparked fan sites dedicated to the character, and led to a bigger role for McKenzie in the Hobbit films - as a different character.
The first Hobbit film, An Unexpected Journey, is due out on December 14 this year, with a world premiere in Wellington on November 28.
- By Chris Schulz of Herald Online
