Games publisher THQ has released Vader Yourself on iTunes. It's a Darth Vader voice distorter, just in case you still can't get it right even after 30 years of practising with your head in a bucket.
Plus, of course, there are some heavy breathing noises to paste in as well, and you can save your edited recording and use it for... whatever. Being funny. It works on any of Apple's touch devices and is out now for $0.99. [iTunes via M-Ent]