Okay, so last night I wanted to test out the PdaNet tethering application. First, I tried a simple test to see if it's possible to game on 3G. I booted up TF2 on Steam while also connected to Ventrilo...
I had 25 ping in game! Unbelievable!
So... then I wanted to take it further. I decided to use my laptop as a bridge and connected my Xbox 360 to it. I used PdaNet to connect my 3G internet to the laptop and through it to the 360. Needless to say, I was able to play Halo 3 on Xbox Live with minimal lag!
Wow, so many great things to say about this. First, PdaNet is a wonderful app! Secondly, Verizon has a kick ass data network!