Interesting article from the NYT that straight-up states that static stretching is bad for you. From personal experience I'm disinclined to believe that, but I wanted to see what those who actually know about kinesiology had to say on here.
There's also an interesting quote from Ryan Hall's coach Terrence Mahon about half-way down.
http://www.nytimes.com/2008/11/02/sports/playmagazine/112pewarm.html?em