Sen. Scott Brown, R-Mass., and Elizabeth Warren sparred in their second debate Monday night, an hour-long forum co-sponsored by the Boston Herald and UMass Lowell and moderated by "Meet The Press" host David Gregory.

While Brown -- who frequently touts his independence and bipartisanship -- was careful to keep his distance from Mitt Romney and Senate Minority Leader Mitch McConnell in the debate, towards the end of the night he cited noted conservative Antonin Scalia as his model Supreme Court justice.

Brown was somewhat toned down from his attack-mode of the first debate, but the senator got plenty of jabs in -- including telling Warren, "Excuse me, I'm not a student in your classroom," at one point when Warren was interrupting him, in an apparent prepared zinger that earned him some boos from the packed audience.