I play Bethpage all the time (I live on Long Island), although not the black, usually the blue or the green, so I know something about the course. I was at The Barclays on Friday, I too followed Tiger and Rory for a while. Saw Tiger hurt his back in that sand trap.
One thing you don't get from watching it on TV is the elevation changes, the hills and valleys these guys are playing through! They make it look easy, but hitting those shots when the ball is above or below you feet, or the uphill and downhill lies, to elevated green...... it is tough!
I'm playing the black in October when my brother comes up for a visit. He is a scratch golfer and wants to play it. I'm worried, you have to bring your "A" game and not let up. There are hole where you have to carry your drive 220, which for me is a problem. I guess I bring a lot of extra balls, LOL.