I think it's just Brand at this juncture, release date is set for 2011. I like Russell Brand alot, if anyone ever gets chance, read his autobiography "My Booky Wook", it's just on hilarious and embarressing tale after another. But, I think this film will bomb. The original pretty much did, even though the role is perfect for Russell this time round. Also heard they're trying to make it similar to Beetlejuice, so, Christ! They'll probably re-make that next.
Shh shh! Circus no! You remember what suggesting things does around here! Next thing you know, someone's going to suggest a Terminator/Matrix crossover, and presto! It'll be out 2012!
But yeah, Brand would be good for the movie, and yeah I think it'll bomb.