I was lucky enough to go to both Toronto shows! wow! still in a euphoric state here...and i'm also hitting the Montreal show! hoping he brings out "Michelle" for that one...
During the second Toronto show he pulled a girl on stage who travelled from Saskatchewan and signed her arm. He made a funny crack (pun pending) that somebody once wanted him to sign their butt. he said that's where he draws the line, except he'd take a peek just to be sure, heh heh.
he also had a funny quip after Dance Tonight, noting that Abe's dance moves weren't even choreographed, "Lady Gaga eat your heart out..."
I also really love the enthusiastic response tunes like 1985 are getting; it's not The Beatles, and it wasn't a "hit", so i'm sure a lot of people are new to the song, but it gets everyone stomping and clapping along and you could really see how much Paul and the band were getting off on the crowd's response too.