I listened to the speeches of both Biden and Obama tonight. Biden was a blowhard, full of enthusiasm but offered nothing but generalities. Joe Trippi said he thought the second half of Biden's speech was sheer demagoguery. Obama then gave his speech and offered the same standard stump speech we are used to hearing from him. I found it uninspired and unconvincing.
Obama set up various "straw men" arguments, by telling us what the evil Republicans want to do, when in fact they have no such goals. If you can't refute what they said, refute what they didn't say.
Charles Krauthammer said Obama's speech was empty and flat, but other than that, he loved it. I agree. The speech was just a lot of promises about what he was going to do in his second four years (probably a lot of golfing back in Chicago, since he will have lots of time on his hands).
If this is the best the Democrats have to offer, I'm not too worried.