This is part two in my short video series going over some of the new features in iPhone OS 3.0. I apologize for how late this is, as certainly by now anyone who has 3.0 will know this, but I knew I had to finish it up and not just have a part one hanging around.
I do recommend that you upgrade to 3.0 regardless of what device you have or whether you want to jailbreak or not. Feel free to check out my videos, where I have tutorials showing how to both upgrade to 3.0 as well as jailbreak it.