Christopher Lloyd would love to do 'Back To The Future 4'

Veteran actor Christopher Lloyd says he would love to reprise his role as Emmett 'Doc' Brown in a potential fourth "Back To The Future" movie.

The 79-year-old actor, however, says he will do the film only if there is a ''right script'', reported Contactmusic.

''I'd be delighted. I'd love to be in a fourth film, if they could come up with the right idea that extends the story and does it as well as the first three," Llyod said.

The actor, who starred opposite Michael J Fox in the sci-fi franchise, believes the sequel will happen if director Robert Zemeckis and his co-writer Bob Gale are ready for it.

''Well, I think its a matter of, first of all, it's important if Bob Zemeckis and Bob Gale are excited about doing another episode [of 'Back to the Future'], I think, really, the most important thing is if they can come up with the right idea.

''I think that's the challenge is to come up with something that really is as good as the originals. I suppose it could happen. I have not heard that they're looking for that, if they've made up their minds ... hey, here's something we could do, and they believed in it then they might get going to do it," he said.