The trailer for Peter Jackson's The Hobbit: An Unexpected Journey has been released, and Lord of the Rings fans will be delighted to see Cate Blanchett, Orlando Bloom, Elijah Wood, Ian McKellen, Luke Evans, Evangeline Lilly and Martin Freeman back on the big screen.

The flick is the first of three planned prequels in the LOTR series, and it follows Bilbo Baggins as he journeys to the Lonely Mountain with a group of Dwarves to reclaim a treasure stolen from them by the dragon Smaug.

The movie hits theaters on December 14, 2012 ... just in time for the holidays!

It's a scary time of year to be in Hollywood!

Tons of celebs stepped out for Universal Studios Hollywood's Halloween Horror Nights over the weekend. Demi Lovato brought a bunch of pals with her, including BFF Hanna Beth, as did Dancing with the Star castmates David Arquette, Ricki Lake, Kym Johnson, Chaz Bono and Cheryl Burke.

Demi had such a great time at the amusement park that she even Tweeted about it, writing, "Just thinking about how excited I am for Halloween! Went to @HorrorNights @UniStudios this weekend and it was sooooo scary - loved it!!"

Wilmer Valderama, Elijah Wood and former One Tree Hill star Chad Michael Murray also hung out with some ghastly creatures.

But David with his old co-star, Scream's Ghostface Killer? Hands down the funniest duo of the day. Sorry, Ricki!

The event runs at Universal Studios through October 31.

The full version of The Beastie Boys' new short film, which is packed with A-listers, has hit the web.

The video comically revisits the group's hit song "(You Gotta) Fight For Your Right (To Party.)"

The celebs playing The Boys themselves (both older and younger versions of them) include Will Ferrell, Jack Black, John C. Reilly, Seth Rogen, Danny McBride and Elijah Wood.

The flick also features cameos from The Beastie Boys themselves ... as cops. The group's new album, Hot Sauce Committee Part Two, drops May 3.

See the full list of celebs who appear in the video after the jump.

And a couple celebs were present to support the True Blood stars, including Elijah Wood! How random.

Among the guests witnessing the beach-side ceremony: Michael Emerson from Lost, co-star Carrie Preston and, yes, Elijah Wood. Congrats to Anna and Stephen! Let's hope this marriage lasts, if only for the sake of the show!

Sometimes we forget that when celebs get all dressed up in their best (or in Mayer's case, his worst), that they're actually being charitable!

And last night's 5th Annual Keep a Child Alive Black Ball was no exception.

The event, which raised money for children living with AIDS, drew everyone from fashion, movies and music, including Jessica Alba, Justin Timberlake, David Bowie & Iman, John Mayer, Queen Latifah, Tyra Banks, Michelle Williams, Alicia Keys, Padma Lakshmi, Clive Davis and more!

Check out the monster gallery below!

Our photographers caught sight of Elijah Wood taking a breather in a tent out at Coachella yesterday afternoon. Given how rarely we see Elijah these days, we were pleased as punch to see him out enjoying himself - but hey, Coachella brings out the best in everyone!