Or the Flyers 5 OT win over the Penguins in 2000, the big comeback and game 7 comeback against the Bruins in 2010, Rollins' GW double against Dodgers in 2009 or that Halladay's no-hitter against the Reds was in the Postseason? If the seasons in which those moment arose ended in championships, I am sure that to this day, they would be considered iconic signature moments in the march to immortality, as would 4th and 26.
If the Eagles didn't win the Super Bowl last year, those dog masks and the "Philly Special" would be historical oddities. If the Phillies didn't win the WS in 2008, Stairs' HR against the Dodgers would likewise be largely forgotten.
I just think it's ridiculous that people are buying "Double Doink" t-shirts and I am sure that somewhere in town, some idiot got a double doink tattoo.