Numark, a major DJ equipment manufacturer, unveiled a prototype of a new mixer at the Musikmesse show in Frankfurt recently.  This is only a prototype, but a very cool concept:  a DJ mixer that mixes across two iPods.  The prototype isn't functional yet, but the idea is clear.

My own rig has an older Numark dual-CD player; no sampling capability, limited looping capability, pitch control but no tempo-only control, etc.  It works fine for my amateur needs, but it's not like their CD players with a 'turntable-like interface' that allows you to cut & scratch CDs as if they were vinyl, and do other nifty things on the fly.  If the iPod mixer ever came to fruition, I'd think it'd be pretty comical the first time I see DJ's 'scratching' using the iPod control wheel...

(thanks to BoingBoing, from whom I picked this up!)