He's probably said something about you - I tend to agree with the Professor here: Joe Biden's former praise of John McCain means close to nothing. First of all, Joe Biden talks so much, he's bound to say something about everybody. And, as Dr. T points out, do we really want a Washington where politicians are unable to praise a colleague for fear that it will boomerang back in the future? Most Americans understand this (I hope.)
Extra - David Ignatius, circa 1995: "Listening to Biden, you sense how hungry he is to be president, but you have little idea what he would do, other than talk...and talk." See?