Well just purchased the 3G a few days ago and I'm very happy with it. Loving this forum as well very informative. All I need is a video camera. Is there an app available? By the way my phone is stock on AT&T.
Welcome to EiC and congrats on the purchase. As for a Video Recording App, you're going to need to Jailbreak for that. QuickPWN can get you Jialbroken and from there you install Cycorder using Cydia. It's a great app and works pretty well.
IF you do end of Jailbreaking it and something doesn't run right you can always do a reset. I was reading up on it and there are very few cases of someone jacking up their iPhone enough to make it a paperweight.