I was able to video chat on GTalk, but the initiator must be someone on a PC/Mac computer. I get mixed results, sometimes my friend on the computer sees me (the video taken with the front cam on the N900) pretty decent, but the video I see of them from their webcam is choppy. Sometimes, it's the other way around. So not sure why.

I'm on 3.5G, while my friend is on cable broadband. Switching to wifi on my N900 doesn't make a difference.

Although not stellar video performance on both ends, its a cool feature to have nonetheless. Hoping newer firmwares might improve this aspect.