I believe the Tampa Bay Devil Rays use it and a couple of other NFL stadia have added it this year (Philly?).
I'm not sure if this is exactly the same stuff, but the University of Tulsa put something very similar, if not realgrass, in it's Stadium about a year or so ago (or maybe they're preparing to, not sure). Anyways, a friend of mine's dad was the head of football ops there (now at Ok State) and he had a sample of the stuff. The 'grass' was very soft, and the base for it was very spongy, seems like it would absorb a lot of impact. I would love to run around on a fielf of it barefoot. I've always hated astroturf, and can't wait until it's obsolete.
I wish i had this stuff in my yard. I hate mowing.
What about sliding tackles and carpet burn? Any comments on that? (too lazy to visit the site)
Judging from the sample I saw, wc2002, I would say that slide tackles would be almost more pleasant than real grass. Well, at least the grass in Oklahoma.
It seems that most sports teams that used to play on artificial turf are replacing their turf with some form of this synthetic grass system. At the University of Illinois they use AstroPlay (IIRC) and it's supposed to be much softer and forgiving than AstroTurf. However, players seem to be slipping on the surface much more than usual. They also use grinded-up tires to provide the "padding" and it makes the endzones look really ugly and sometimes when a player falls a dust of rubber will come out of the surface.
I've played indoor soccer on it (or something similar) at the Bladium in Alameda. It feels a little springy/bouncy if you're walking across it, but you don't notice it at all when you're running. It's a little softer than hitting than ground if you fall or get knocked down. There's a bedding of ground-up black rubber (tires?) that makes a little explosion when you cut or when the ball hits the ground. They have a similar surface (FieldTurf) at the Seahawks' new stadium in Seattle; I noticed the little explosions in the Sunday night game.
here's a rundown of some of the newer surfaces being used in the nfl. and this is a very nice pdf showing how it is constructed.
(one factual note: Curtis is now at Crystal Palace, and has been since last year. But he gave us some great years on the grass that grows.)
etagloh: that wording is straight from realgrass. but nevertheless, i stand corrected. and while i'm admitting to my errors, my previous link to the rundown should have pointed here. and you can't deep link to dallascowboys.com (which i did in the fpp)