I liked your quick bit on the Kennedy's endorsement of Obama. As an early Obama supporter, it has been driving me nuts listening to Former Prez Clinton subtly slander Obama. The whole Reagan/Ideas thing was completely mischaracterized by the Clinton Camp (did you hear the radio ads taking the quote out of context?). The fact that Bill Clinton was a leader of the DLC and their attempts to Republicanize the Democratic Party has been conveniently overlooked by the short term memory possessed media.
The DLC's tactics served the Dems well at the time Clinton ran, post-Reagan and Bush #1. In effect, they are still running this sort of campaign, this time for Hillary: "What are people voting for? Okay, let's be like THAT!"
The Kennedy endorsement is a major sign that the DLC's grip on the Democratic Party has faltered. The first sign was Howard Dean's ascension to DNC Chair. Certainly Teddy's endorsement serves notice that the DLC is in eclipse.
Caroline's endorsement serves a different purpose and audience, I believe. Her comment that, in Obama, she feels the kind of hope that people tell her that her father gave them, is huge with young 40 somethings and younger voters who don't actually remember the JFK, or even the RFK years. Like me. We've heard the legends our whole lives (well, maybe I did even more so because I grew up in Massachusetts). In Caroline, here's someone with the cred to say what she said and make it mean something... and somehow make Obama's candidacy more historically resonant.