The tutorial was good for people who had never used git before. It also gave a good background on the implementation strategy. However, everyone there had used git before so I think a lot of the introductory material about add, commit, status etc would have been too familiar for most.
I zipped through the lab exercises and moved to Brian's Rails 3 Ropes tutorial during the mid-morning break. Over there, I had to race to catch up but got some fun experience upgrading a Rails 2 application to Rails 3. The second half was well-presented (and I will assume the first half was too) by the Envy Labs folks with Gregg Pollack doing the speaking and the rest of the team assisting people as they had problems with the exercises.