Ha, you sound like you're exactly where I was several weeks ago. I have an Apple store right across the street from my office and I was in there a couple of times a week for the entire month of Sept. I would take the glossy and anti-glare MBP 17's and put them next to each other then run through iphoto, imovie, final cut, aperture, etc for an hour. The Apple associates just learned to leave me alone after a while.
I admit it was a tough decision. The glossy screen can look "wow" with heavily saturated colors and deep blacks. And in many cases, the glare can be eliminated for the most part by moving the screen 1/4 inch to bounce the reflections away from your eyes. The glass layer shows finger prints more easily but it's also easier to clean and provides some protection to the LCD panel. I also think the edge to edge look of the glossy panel is the better looking of the two. The anti-glare screen with its aluminum bezel looks more industrial / utilitarian. The glossy screen looks like a slick consumer product.
In the end though I went with the anti-glare screen and I'm really happy with it. The anti-glare coating is about the best I've ever used. What really sold me was the lack of reflections plus the more natural rendering of colors. When you put the two side by side, the glossy can impress until you realize that the colors don't look natural. They look over saturated next to the anti-glare screen. I use the MBP 90% of the time for editing still photos and video footage so accurate colors are important for me. And with the gloosy screen sometimes when I adjusted the screen angle to eliminate a light source, the screen would then pick up a mirror like reflection of the light colored aluminum deck on the computer. It was a no win situation. Also, even when the display area had a bright image displayed and glare wasn't an issue, the all black bezel area surrounding the screen would pick up and reflect my hand movements and even the shirt I was wearing. The peripheral reflected movements were really distracting when you're trying to concentrate. If you're just watching a movie it wouldn't be a problem.
Good luck.