[David Arquette launches Snicker's "Bar Hunger" campaign atop Madison Square Garden. Photos via Getty] Did you happen to be around Madison Square Garden yesterday? No? Well you haven't missed your big chance to catch David Arquette on top of the Garden's Marquee...yet. He's there again today to raise awareness about hunger in America for all of  the passerbys below. Armed with a Snickers megaphone, and a see-through room, he hopes to raise more than $250k over two days.  More photos below....