There are few better motivators than free beer.
Tui, a New Zealand brand of beer, got some Wellington Hurriances and Canterbury Crusaders players to try out their tackle machine which dispenses free beer if the tackle bag is hit hard enough.
It doesn't matter that Tui is actually a pretty terrible beer, the players still hit hard to gain their free refreshment.
http://www.youtube.com/watch?v=2mwMxeoDb9Q
via Reddit