"Where has Robin Williams been?" is a question most of you probably ask your relatives and church leaders right after posing the question, "Where has Shirley MacLaine been?" Now you can rest easy knowing that both of these fine actors are still around and have signed on to a brand new ensemble comedy.

Williams, MacLaine and that dorky kid, Oliver Cooper from 'Project X,' have signed on to star in the comedy 'A Film By Alan Stuart Eisner.' Rob Reiner, (nobody knows where he's been) is also slated to make a cameo in the movie.

According to Deadline, 'A Film By Alan Stuart Eisner.' "follows a young documentary filmmaker with a burning desire to bring his family’s amazing and bizarre World War II history to the screen." Andy Bergam wrote the script and will also be directing. He is once again teaming up with producer Mike Lobell. The two previously worked on such films as 'Honeymoon in Vegas,' 'The Freshman,' 'Striptease,' and 'It Could Happen To You.'

Lobell is currently putting together financing after finally getting the remake of 'Gambit' off the ground. Joel and Ethan Cohen wrote the script and 'Gambit' is directed by Michael Hoffman for CBS Films. It is expected to hit theaters on October 12th.

We'll keep you updated on more casting news for 'A Film By Alan Stuart Eisner' as it happens.