Val Kilmer and 50 Cent walk the red carpet at the American Music Awards
Photo: Jason Merritt/ Getty Images

LOS ANGELES — 50 Cent is a busy man — he just released a new album, Before I Self Destruct, and film of the same name, and he's working on several other movies in various stages of development. He's also an unpredictable man — as evidenced by his double-take-inducing appearance at last week's "New Moon" premiere. So, it makes sense that the rapper/actor/mogul would show up at the American Music Awards with Val Kilmer as his "date," eager to tell everyone that he's even busier and more unpredictable than they think.

"It's exciting," he said of the 2009 AMAs, walking down the red carpet alongside a grinning Kilmer, who could best be described as being dressed like Truman Capote's evil twin. "We came out here to enjoy the festivities. Val and I are going to sit and see what's going on. Are you wondering why we're together?"

Well, yeah. And with that, 50 revealed that he had written a screenplay for a movie in which he and Kilmer are set to star.

"We're here because we've got a project that we're working on together," said 50, who took the stage later that night with Eminem. "It [starts] in December."

"It's called 'The Gun,' and it's about a gun," Kilmer added. "It's a really good title. He wrote it."

According to 50 Cent, who has written three feature-film scripts recently, the role Kilmer will be playing was transported from a different screenplay. "He's actually a character from a different project, but I got him to come out of there when he saw the value of what he was looking for."

Fitty explained that "The Gun" has a "socially conscious" theme. "It's about how a weapon goes from manufacturing to its distribution point, to being in a citizen's custody — and how it ends up in the wrong hands," he said. "We watch the actual gun travel through a few different people's hands."

"I'm a criminal," explained Kilmer, saying he gets the gun at one point. "And we're friends."

"Gun" would mark the second time 50 Cent and Kilmer have collaborated, following their recent straight-to-DVD release "Streets of Blood." And if all goes well, the rapper said, perhaps 50 will ask the veteran actor to collaborate in the medium that made him famous.

"I know [Val can sing]," grinned 50 Cent, thinking back to films like "Top Secret!" and "The Doors," in which Kilmer played Jim Morrison. "You think I don't know?

"Yeah, there's a possibility ... you could hear something from us on this next album, if I can work that into the situation," he promised. "But that's hard."

With a smile, the actor added that he'd be up for it if Fif would only ask. "I do whatever he says," Kilmer explained.