There's a superb application online that allows you to cut your own Sweeney Todd: The Demon Barber of Fleet Street trailer online. Remember to make sure it looks like a musical though!

The flash based site allows you to select audio, video, graphics, animations, text and music, and edit them all together on a multi-track system, all online.

Not only that but there's a nice little ecard system, so if you have a few very last minute cards to send, fire them off now! You can get to the ecards from the front page of the Sweeney Todd: The Demon Barber of Fleet Street site - note that this link will open a popup with the ecards on it.

For the trailer editing site, which does look a lot of fun, head over to the official mashup editing site and get editing.

Feel free to post up your attempts...I might try my hand at them!