Well, it's become iconic. Paul Stastny and Matt Duchene started doing a dance they saw in "How I Met Your Mother" last season. Ever since, it's been a tradition after each game the Avs come out ahead. Thus, it's important - as an Avs fan - that you know what it looks like...so that you can do it after every win, too.
UPDATE: Just an FYI...I posted this last night on YouTube after the game...it already has 650 views. The first one I posted on Saturday, which mostly just shows Stastny, has over 6,000. Phenomenon for sure.