Via Titus Brown, a link to the Insight Journal, an open access online publication covering medical image processing. They have a very interesting process requirement: your source code must compile & be verifiable by an automatic system. I've been expecting something like this for a long time; glad to see it happening.
Later: and, via Gary Bader, Source Code for Biology and Medicine. Anyone know of a journal or journals like this for physics, chemistry, geology, and other non-life-science areas? Or (wistfully) computer science?