Fly Guy
Charming Flash game (sort of): Fly Guy, by Trevor Van Meter, Jason Krogh, et alia. You use the arrow keys to make a businessman leave the bus stop he's standing at and fly off through the clouds. Not terribly deep, but fun, charming, cute; somewhere in the general vein of old games like The Manhole. Warning: some things you encounter can send you back to the start.
The cosmology reminds me of a certain sf story from a decade or so back.
I think it requires the Flash 6 plugin, but I'm not certain.