We were sitting in the airplane from 0044z to when we took off 2hrs later. It was a pretty good show...I think everyone was a little on edge about the tornado warnings, but there was enough lightning that none of the aircraft that were off the gate were getting back. They evacuated the tracon, and it ended up taking quite a while to get things rolling again.
The worst of it was that a second storm hit at about 2230 local, and caused a huge number of holds coming in from the west. We were one of the last west departures to get out.