Hall of Fame
There are some well polished, shiny applications out there that do what they should and are reliable for actually using them, not only playing with them.
Current polls for new apps take place on the discussion page.
You know that game where you have a metal ball on a tiltable wooden board and have to get it to the finish avoiding holes? Here you are. Addictive!
A physics sandbox
Displays Openstreetmap.org maps