Here's some YouTube videos of the OneUps on PAX. Most are very short, but the Mii Channel is full length. There are more OneUps videos around YouTube if you search, but they're from OneUps Live, the BBQs, other shows, etc. I even found a clip of us playing at Dallas for an audience of approximately six people.

http://youtube.com/watch?v=3siGpQTwvLA (Chocobo!)
http://youtube.com/watch?v=xjTDJ3TfTq4 (Mii Channel)
http://youtube.com/watch?v=z6K_4EphCSg (Vega)
http://youtube.com/watch?v=yuYnREpL524 (Toejam and Earl)

Pictures from The OneUps' performance at PAX are available:

Here

And Here

Enjoy!