This is a screen-capture from a camcorder; not the best but still pretty cool.
This was at Mississippi's Stennis Space Center in January 2007. There was a storm off to the south, near the rest area/Welcome Center. Museum nannies made everyone go back inside the museum: can't have the little snowflake taxpayers getting hit by lightning, right? I hung out on the front porch and aimed my camcorder toward the sounds of thunder and hoped for something interesting. For once, something interesting happened.