|Beowolf family, from MyFonts|
What's great about this site is the number of different kinds of text you can choose to display the various fonts. I find the mid-rough R22 style most pleasing to my eye.
A 2008 post on the Typographica blog gives some interesting historical background to this family. (There's a blog all about fonts!?! I may never get anything useful done again...)
This reminds me of "roughness", which is one of Christopher Alexander's 15 "generative properties", from his Nature of Order work, used to produce architectural structures that exhibit "wholeness". We did some work a while back trying to formalise a few of the other properties, through BlobWorld, and were interested to discover an optical illusion that led to an appearance of roughness emerging. Rough brickwork, or rough wall alignment, okay. But rough fonts? Neat.