Check out this amazing Lego construction by Baron von Brunk: a 1.5m model of a Nintendo Entertainment System controller made with Lego bricks. One that actually works just like the real thing.
Initially conceived in the late summer of 2012, this titanic brute has been gradually worked on since the past months and finally completed towards the end of 2012. Various issues, such as work-related and/or financial problems halted its production, but nonetheless I managed to complete this giant controller, in both its LEGO structure as well as electrical functionality.
You will need to be Donkey Kong to use it, but that doesn't make it any less awesome.