Ok thats actually quite a big list, the latest one to join in the list is Scotish cyclist Graeme Obree.
A Small glimpse about his achievements:
Obree built a bicycle from parts of washing maching and became a world champion in 1993
Instead of traditional dropped handlebars it had straight bars like those of a mountain bike. He placed them closer to the saddle than usual and rode with the bars under his chest, his elbows bent and tucked into his sides like those of a ski-jumper. Watching a washing machine spin at 1,200rpm led him to take the bearings, which he assumed must be of superior quality, and fit them to his bike.