It appears that the J in DJ is not Jockey like we had thought, but instead DJay...I digress
Djay puts a pair of turntables and mixer on your iPad screen, which is perfect with the multitouch nature of your iPad as well. After trying this out for a little while, we've decided it is pretty cool. The iPad's multitouch makes moving the sliders, selecting music as scratching is pretty intuitive and very handy to haul around in an iPad app.
Here is a video sample of the iPad Djay, check it out!
Djay for iPad is available for $20 from the App Store