You Can't Do Binary Under Pressure (toys.usvsth3m.com)

Apparently I can. :-)

Also, try their "You Can't Write Proper English Under Pressure":

http://toys.usvsth3m.com/write/

Although I beat it, It still took my brain until level 3 to realize why I skipped from level 1 to 10

I didn't know I could do this so well.