In the 50-year franchise history of the Washington Capitals, they have played the most games against the Pittsburgh Penguins - 251. They have won 110 of those games. That makes it a little extra special that this could be the last year we see an Ovechkin v. Crosby matchup.
Slightly more obscure; the plus/minus can be a bit of a throw away stat. And it tends to average out over time. As one might expect, a high plus is really good. For example, Alexei Protas set the Capitals +/- record last season at a +40, thirteen points ahead of the next highest, Pierre Luc Dubois.