Joe Biden gave the biggest speech of his career on Thursday night when he accepted the Democratic nomination for president. "The current president's cloaked America in darkness for far too long," the former vice president said. "Too much anger, too much fear, too much division. I will draw on the best of us, not the worst. … And make no mistake, united we can and will overcome this season of darkness."The speech earned rave reviews, with former President Barack Obama's chief speechwriter Cody Keenan calling it "easily Joe Biden's best speech. He rose to the moment in a big way." Added Politico's chief political correspondent Tim Alberta, "We're watching an old ballplayer whose skills have diminished turn in a career-best performance in the biggest game of his life. Remarkable to witness."The speech even received praise by some across the aisle. Conservative commentator Erick Erickson tweeted, "Biden exceeded expectations....