We spent last evening at Professor Thom's , the Boston sports bar here in New York City. (Apparently, it used to be Riviera's, but then some bartenders got fired, or something; it's difficult to keep track of such matters.) We were engulfed in a swarm of New Englanders, the people who, over the last several years, have celebrated titles, and celebrated titles, and celebrated titles. We saw every inch of their joy last night. (Not a euphemism!) And you know what? It wasn't so bad. It was really fun. The goofy looks around the bar at halftime betrayed any fear of jinxing; this title was happening, and one couldn't pretend otherwise. The dominance of the Celtics was overwhelming, all-encompassing and enthralling; it really had the feel of a Harlem Globetrotters-Wa…