Google Chrome released a set of WebGL demos to help highlight what you can do with the API. "Chromium's 2D canvas acceleration uses same GPU process infrastructure as the compositor. In addition, this system picks the best graphics API to use on each OS that Chromium supports: Windows XP/Vista/7, Mac OS and Linux. We haven't finished implementing accelerated 2D canvas support – there's no Mac support and some functions aren't accelerated yet – but Chromium already achieves some impressive gains on recent IE9 Platform Preview Test Drive 2D canvas demos:," said Google.
Check out demo gallery with an up-to-date canary build or Chromium build and have some fun with using your GPU in the browser! For a quick peek at some of these demos, you can watch playlist of preview videos: