The one this time is Professor Fizzwizzle, and it's a terrific little progressive puzzle game.
And, I've gotta admit, it fires on all cylinders. Great graphics music and UI. Only weirdness is some kind of "stick pictures to the refrigerator" metagame that I don't quite understand.
Anyway, check it out. It'll grab you and force you to register it as it did with me.
Oh well.