Here are a couple of you tube links to the well know Coast and Toast ride from Manly to Palm Beach, held early every Saturday. It starts friendly enough, but as the riders get closer to the sprint at Palmy, the action starts
Part 1 is here - http://www.youtube.com/watch?v=o-ASZKIhFFo&list=UU24xI_rUeaZiEFpmp9d_qmw&index=2&feature=plcp
Part 2 is http://www.youtube.com/watch?v=VYygblFLajY&list=UU24xI_rUeaZiEFpmp9d_qmw&index=1&feature=plcp
Enjoy the view!