A couple of music videos have appeared online, both claiming to be the first-ever music video filmed with an iPhone 4. The Anix may've got in there first, on Monday, but Flakjakt's is a much better watch (and listen).
Of course, it's all subjective, and both are pleasingly polished videos, but there's no arguing with the YouTube date-of-upload. If only you'd been four days earlier, Flakjakt.
Both videos were shot on the iPhone 4, with Canadian Flakjakt's song written in two days, the video shot in 1.3 days, and all the editing done in another two days. Flakjackt doesn't say which editing equipment they used, but it was probably a very similar set-up to The Anix's, which was done with a MacBook Pro (with i7 processor); the song recorded using Logic 9. They apparently filmed the whole video "literally minutes after taking it out of the box", no doubt to get it up as quickly as possible to stake their claim on the iPhone 4 fame-wagon.
Of course, filming music isn't the only way you can eke out some content creation on an iDevice - Rana Sobhany, the iPad DJ, did a fine job of mixing it up on two tablets back in April: