I'm not a big fan of grass. It has its place, but I'd prefer to not have that be in my lawn, if I can help it. Ever since hearing Fritz Haeg speak this fall, I look at every lawn (including my own) and imagine a garden. (Full disclosure: I wrote this blog entry for Project Grow.)
But perhaps a use has been found! Check out this post about grass-lined green railways - absolutely brilliant! I might rethink my opinion of that short green stuff.