Johnny Depp stars as Sweeney Todd.

Helena Bonham Carter stars as Mrs. Lovett.

Socha Cohen (now making a splash as "Borat") just signed on as (you could predict this) Signor Adolfo Pirelli.

Tim Burton ("Edward Scissorhands", "Ed Wood", "Charlie And The Chocolate Factory") directs.

Yes, this is the film version of the Sondheim classic.  Shooting to start sometime in 2007.