So I was just telling a cynical chum to buy Peggle, or be damned, and he asked if viewing the ad-funded version browser version counted against his descent to hell. Of course, being the RPS daily dunce, I had no idea there was one, or that it was a free as (advert-ridden) sunshine. It isn't as good as the full retail version, by virtue of being trapped in a browser, but you can now get to Peggle without having to part with seven British pounds , or fifteen Yanqui dollars. See the "Also Available Online" bit at the bottom of that page for the link. You need to install a browser plugin, then all the Peggle is your oyster, or something.
Peggle, in case you've been entombed in a rock for past year, is the best puzzle thing since sliced Tetris.