WizBit is a BitTorrent client for symbian S60 smartphones, using python. WizBit is not fully functional yet but David Hulbert, the developer of the Mobile BitTorrent client is planning to release the first major release on July 7.
Although the idea is great, Hollywood does not have to worry yet since the connection speeds on mobile phones are too slow and the transfer costs too high. But that is likely to change in the future.
WizBit started as a I Computer Science (actually Internet Computing, but it’s almost the same) project at Exeter University, and definitely looks like a promising project.
More info on Wizbit