kane was probably a little more pumped up than usual (duh) because of the return AND the bedard thing. not only has bedard become the new hot thing in chicago (taking kane's place), but bedard also went at kane a few times. checked him against the boards earlier, and right before that scoring play in ot, bedard was on the boards muscling kane for the puck and winning the battle.
kane might just have had a little more oomph in that celebration to tell the young fella that the old guy aint dead yet...