'Twilight' even has celebs in a fan frenzy!

Fall Out Boy and soon-to-be-dad Pete Wentz called in to the finale of "TRL" Sunday night to say he couldn't make the show but instead had picked up a bootleg copy of 'Twilight' and couldn't stop watching it!

The band Paramore is lending their support by providing the theme song for the film. The soundtrack is currently number one on the Billboard 200 album chart!

Grunge rocker Courtney Love also gave a shout out to 'Twilight' in a recent fashion blog entry. "I'd wear this to 'Twilight,'" she writes. "Oh yeah, 'Twilight!'"

Talk show host Ellen DeGeneres joins the movie excitement by welcoming vampire hunk Robert Pattinson to her show Nov. 21 -- the same day the film is released in theaters.

Watch ET for more with the cast of 'Twilight'!