Michael,
Might wanna request a demo from KBeech here:

http://www.kbeech.com/webmasters.asp

They have a gay video plugin that has, among other things, live feeds. I've not checked it out myself in awhile but I'm sure if you get in touch with them they'll hook you up with the demo and let you go in for a peek.

Rocky mentions you already have BeachBoi, and that one's great.

Flirt4Free Guys is the cream of the crop on this all, as well. They always have tons and tons of really hot guys (right now, for instance, there must be like 40 individual guys!!) live and online and I promote them through paysite members areas as well as free sites with great success.