I thought the 1:1 STTNG Enterprise I blogged about yesterday was impressive, but today my buddy H sent me this video of a fully implemented and working 16-bit ALU built in minecraft. My first reaction was "OMGWTFBBQ". The second was "this guy is going to have a lineup of girls from building this thing." Seriously though, he has room for RAM expansion and plans for a compiler for it.
I really have to check out this game....