Powerline has a few thoughts on Ted Kennedy's most important legacy, for better or for worse: his destruction of highly qualified Supreme Court nominee Robert Bork and the subsequent replacement of Bork with Anthony Kennedy. This likely led to the nomination of liberal justice David Souter by George H.W. Bush, as well as the attempted character assassination of Clarence Thomas.
On another note, I find it amusing that people keep talking about the Kennedy brothers as if they were monolithic. Frankly, Ted couldn't be further from JFK (or RFK for that matter) in his policy views.
I sense Paul Wellstone II coming - and the ensuing Communist Health Care Takeover Act of 2009 in Kennedy's name. RIP.