yes, it's one of the famous duet, Tim Burton and Johnny Depp once again.
I don't really know the plot line of Sweeney Todd (never heard it before, the Broadway show nor the book) but my first impression was it's somewhere between Edward's Scissorshand and Sleepy Hallow
trailerQUOTE
Based on the 19th century legend of Sweeney Todd and the hit Broadway musical with music and lyrics by Stephen Sondheim, Sweeney Todd a.k.a Benjamin Barker returns to London after being sent away by Judge Turpin with the help of a sailor, Anthony Hope. He opens a barber shop above Mrs. Lovett's Meat Pie Shop were she sells "the worst pies in London." With the help of Mrs. Lovett, Todd tries to rid of all the people who have ever done him wrong and hopes to be reunited with his daughter, Joanna, who is now Judge Turpin's ward.
edit : this movie is coming to USA in Christmas 2007
here's the
official website