Multivid for iPhone: wi-fi synchronized video playback
This handy-looking little app is straightforward, but could be very useful for some. Using a wi-fi access point, it transfers video files to several iPhones or iPod Touches, then lets you control playback of the video using your Mac or via one of the devices (a computer is still needed to add media). That’s pretty much all there is to it. I can see several uses for this, but one that pops to mind (to my shame) is tour groups. Synchronized playback while visiting a monument or historical area would be handy; you could have a whole troupe of people being guided around an exhibit with nary a tour guide in sight. I’m sure you guys can come up with more dignified uses for it.

It’s being reviewed by Apple as we speak, and it’ll be free when it comes out.

[via Creative Applications; thanks, luckydave]