I'm all for WebGL, assuming that the performance issues will eventually be worked out and it will have decent browser support.
Other than the obvious use for games and videos like ro.me, I think tasteful use on normal webpages (with graceful fallback) opens up a whole new toolkit for designers, just like webfonts.
An example would be the way the menu buttons rotate ever so slightly in 3D in response to mouse movement in Anomaly: Warzone Earth. You can see it at 3:10 here: http://www.youtube.com/watch?v=-OSXnSMJjdA
For games, sure. For use on other webpages: Depends on how resource intensive it is, to be honest. If I'm playing a game and browsing the web at the same time, I don't want the game slowed down further because there's a whole bunch of OpenGL things going on at the same time.
Other than the obvious use for games and videos like ro.me, I think tasteful use on normal webpages (with graceful fallback) opens up a whole new toolkit for designers, just like webfonts.
An example would be the way the menu buttons rotate ever so slightly in 3D in response to mouse movement in Anomaly: Warzone Earth. You can see it at 3:10 here: http://www.youtube.com/watch?v=-OSXnSMJjdA