I was on a flight to Denver during the Obama/Biden event (note to United: get those handy little teevees on the seat backs) so was unable to see their speeches, but I'm loving this coverage of Biden in an AP analysis titled "Biden fills attack role":

Barack Obama says Joe Biden is ready to step in as president. He's not bad in the role of attack dog, either, wasting no time gnawing at GOP rival John McCain.

"He will have to figure out which of the seven kitchen tables to sit at" when considering his own economic future, Biden said -- a blistering reference to McCain's embarrassing admission, particularly during a period of financial turmoil, that he didn't know how many homes he and his ultra-wealthy wife own. [...]

In one breath, he called McCain "generally a friend of mine" over a 35-year period. In the next, the Democrat skewered his decades-old Republican colleague and linked McCain to the unpopular President Bush at every turn.

"The American dream under eight years of Bush and McCain, that American dream is slipping away," Biden said -- suggesting that McCain, too, served in the White House during that period and overlooking the times when the Arizona senator broke from his own party's standard-bearer.

He jabbed at McCain, a Vietnam prisoner of war who is arguably the county's most vocal supporter of the U.S. mission in Iraq, next to Bush. Said Biden: "These times require more than a good soldier. They require a wise leader. A leader who can deliver."

And perfectly summed up the choice between Barack Obama and John McCain:

"You can't change America when you know your first four years as president will look exactly like the last eight years of George Bush's presidency."

Joe Biden: the fighter we've been waiting for.