Definitely a cool game from the 4 players/25+ points standpoint. I did see a quick blurb scrolling by on ESPN that said this was the 2nd time the Cs have done this. Quick Google search brought this up from the Washington Post:
The four players at 25 or more points marked just the second such occurrence in Celtics history. Tom Heinsohn, Bill Russell, Bob Cousy and Bill Sharman did it on Jan. 20, 1960
So maybe the Knicks thing is just recent history(?)