I play Minecraft a lot and have been LPing it on Youtube for ages now-
here's the link to the series. I'm a huge fan of the builds of the players on the Mindcrack server (Etho, Docm77 etc) so most of my builds are more technically-minded, but I do have one special project I call 'The Complex', which consists of animal farms, crop farms, a mob XP farm, a (crap) fish farm, a Zombie Pigman farm and a small tree farm, almost entirely made out of glass above a height of y=128. I've also built (elsewhere) a Blaze farm, an Enderman farm and a (crap) Witch farm from other people's designs, and designed and built my own silverfish farm. I really should get on and do something a bit more aesthetic sometime soon.