Gnome 2.4 comes standard with GnomeMeeting 0.98.5, a Free video-conferencing application. I have used iSight/iChat and MSN Messenger with a web camera for quite a while now and so here's how Gnomeemeeting compares to these other options.

My $35 USB Creative Webcam Pro works fine with any Unix I have tried it with (BSD, Mandrake, JDS, RHL/Fedora, Slackware etc, but not on Mac OS X) and Gnomemeeting loads it successfully too. The first time you run Gnomemeeting it runs a wizard which sets up your microphone, video and personal information.