Pratt, Woodley arrive at MTV Movie Awards

JESSICA HERNDON
FILE - In this Dec. 12, 2013, file photo, talk show host Conan O'Brien arrives for the Breakthrough Prize in Life Sciences awards in Moffett Field, Calif. O'Brien hosts the 2014 MTV Movie Awards on Sunday, April 13, 2014, at the Nokia Theatre in downtown Los Angeles. (AP Photo/Ben Margot, file)

LOS ANGELES (AP) — The 22nd annual MTV Movie Awards show is underway in Los Angeles, with the Backstreet Boys receiving a preshow golden popcorn-shaped prize for best musical moment. Band members Brian Littrell and A.J. McLean accepted the award on the carpet before the show kicked off.

The award for best cameo performance went to Rihanna for her appearance in the comedy "This is the End." During the show, Rihanna will take the stage with Eminem to perform their hit "The Monster."

Best kiss went to Emmy Roberts, Jennifer Aniston and Will Poulter.

Host Conan O'Brien has promised nudity and flames during the ceremony, airing live from the Nokia Theatre. "You're gonna see a lot of me in the show, so watch for it," O'Brien said during rehearsals.

"American Hustle" and "The Hobbit: The Desolation of Smaug" top the nominees on the two-hour show, where fans vote online for such zany awards as best kiss and best villain. Jennifer Aniston from "We're the Millers" and Leonardo DiCaprio in "The Wolf of Wall Street" are vying for best shirtless performance.

Movie of the year nominees in1clude "12 Years a Slave," ''The Hunger Games: Catching Fire," ''The Hobbit: The Desolation of Smaug," ''The Wolf of Wall Street" and "American Hustle."

But more important to the Hollywood studios, the MTV Movie Awards have become the ideal platform to promote their summer movies. This year's show promises exclusive footage from anticipated blockbusters like "The Spider-Man 2" and "X-Men: Days of Future Past." Some of the films' stars, including Andrew Garfield, Emma Stone, Jamie Foxx and Ellen Page, will introduce the clips.

The show will also feature special honors to Mark Wahlberg and Channing Tatum, and a special tribute is planned for Paul Walker, who died in a car crash last November.

Rosario Dawson, Lupita Nyong'o, Mila Kunis and Adrian Grenier are among the expected presenters.

___

Online:

http://movieawards.mtv.com/

___

Follow AP Film Writer Jessica Herndon on Twitter at: https://twitter.com/SomeKind