While browsing http://pouet.net the other day, I stumbled upon "Zen Bondage". With a name like that, I just had to check it out . The concept is pretty simple: you have a rope covered in paint, and have to cover the entire object by, well, bondaging it. This can get pretty tricky!
Note that this is a demoscene kinda thing, so it isn't a fully finished game - for instance you don't "win" when you get 100% coverage, you just have to hit escape and select quit, and go on to the next object.