The sneer and the "yes we can" chant

Was it just me or did Obama seem to be delivering a lot of his lines with a sneer?  I thought that the mantra "yes we can" was not at all delivered like I would have expected, which would have been like an inspiring shout-out to the adoring fans.  It seemed to me more like  a monotone chant - with the aforementioned sneer.  It was creepy!

Not meaning to offend, and God knows I was no McCain supporter, but that is what my impression was.

DQ