Sportingbet TV's Troy Luff and Duncan McRae preview the 2011 AFL Grand Final between Collingwood and Geelong. We've gone BONUS MAD this Grand Final weekend! In the AFL, get a 50% BONUS on 1st Goal Scorer/Margin Double, Wire-to-Wire and Last Goal Scorer markets as well as a 20% BONUS on the Norm Smith Medal Winner. For the latest AFL Grand Final markets and odds, visit: www.sportingbet.com.au