This is pretty tight. This dude made a CPU... By hand! Granted it is only 3MHz, but still, he built it by hand!
http://hardware.slashdot.org/hardware/05/06/06/1118242.shtml?tid=222&tid=1
http://hardware.slashdot.org/hardware/05/06/06/1118242.shtml?tid=222&tid=1