It's been more than 40 years since Rob Reiner made his first movie but the award-winning actor and director said he still has no idea if his films will work.

His illustrious directing career started in 1984 with his first film — "This is Spinal Tap," which was made with a four-page outline and no script — and continues with his latest film, "Spinal Tap II: The End Continues."

"People would say, 'I can't believe your first movie would be improvised, there'd be no script. And that's scary.' And, to me, it was the opposite. I wasn't scared," Reiner said.

From acting to directing

Reiner may be best known as a director now, but he started as an actor. He trained in theater and improv at UCLA. At 23, he was cast by producer and family friend Norman Lear to play left-wing Michael Stivic, aka

See Full Page