National Geographic Channel, Factory Floor with Marshall Brain: Tennis Ball, Pencil, Hot Dog, Fireworks
Original air date: October 2, 2008 - 8 pm
Additional air dates: October 4, 2008 - 9 am; October 9, 2008 - 1 pm
Check local listings for repeats
Original air date: October 2, 2008 - 8 pm
Additional air dates: October 4, 2008 - 9 am; October 9, 2008 - 1 pm
Check local listings for repeats