Honestly, I used to think S&T; was hocus pocus fad stuff like the AJ kind of thing being discussed on another thread, but after reading a lot of Iacas' posts and watching a LOT of tour swings, I've changed my mind and implemented some new things, namely making sure my head is still and sliding my hips forward. By doing this, and checking myself on video once every two weeks or so to try to mark some progress, I'm seeing some great ball striking changes. I don't consider it a S&T; swing.
It's just good fundamentals. My weight still goes to my back foot during the back swing (it has to, even in S&T;), but it just feels like I'm doing it less, thus eliminating unnecessary head movement. Sliding my hips has helped eliminate the spinning of the hips I was doing, and thus eliminated blocks from the inside, or flipping the club to try to save it and snap hooking it. Finally, all of this has created less unnecessary movement with my swing, and created much more consistency.
I'm still pretty young in this game, but my recommendation would be for everyone to video their swing, and see how much their moving around. For me, it was a lot. Thanks to Iacas though. I always look forward to his thoughts on the swing, accompanied of course with videos and pictures explaining his point. They've been a lot of help to my golf game.