25 - Number of years since two teams with perfect records faced one another as late in the season as the Capitals and Red Wings will tomorrow night, assuming Detroit defeat winless Columbus tonight.

The last time two unblemished squads did battle this late in a campaign was October 23, 1986, when the 7-0-0 Pittsburgh Penguins faced the 5-0-0 Philadelphia Flyers in Philly (here's an article from that morning).