Mac to PC Video Chat Solutions
You could always try video chatting between other Mac and PC users using ooVoo - it lets you chat with upto 6 people simulatenously. I work for ooVoo and I am happy to share w/ you that we are about to announce the next version of ooVoo for Mac: 1.5 which will have video conversation recording and phone calls to U.S. and Canada enabled. Shoot me an email (tom.herman@oovoo.com) if you'd like to join the beta test of 1.5 and receive it early. You can download the original version from www.ooVoo.com/download"
Hope this helps.
-tj