There's only one game in the NHL tonight, but it is a big one for the Big D as the Stars look to eliminate the visiting Colorado Avalanche. And it's an off day for the Vancouver Canucks and Edmonton Oilers after serving up a classic finish in Game 4 last night. Here are five things you need to know about the NHL playoffs: OILERS PREVAIL IN WILD FINISH Anyone with long fingernails this morning likely didn't watch the final period of the Edmonton Oilers 3-2 victory over the visiting Vancouver Canu