iTwist ‘n Go
is a new Mac OS X utility designed to simplify the use of Apple’s external iSight webcam and iChat AV. It costs $19.99.
iTwist ‘n Go lets you use your iSight camera to answer and hang up video and audio calls simply by twisting the iris on your iSight. It will also automatically stop screensavers during incoming iChat AV calls so you can see who’s calling, and will automatically let you view iChat AV video calls in full screen mode.
iTwist ‘n Go also helps users who field text messages — the software lets you receive message panels directly without having to click “Accept” each time someone sends you a new message.