I have not had a chance to read it yet, busy with kids baseball and my new MacBook, but RoR's creator David Heinemeier Hansson is on the cover of Linux Journal this month. If you program in Ruby or are taking a look at the language, pick up a copy of this magazine. The whole issue is packed with Ruby gems. Heh.
Oh, and incase you didn't know, Ruby comes with Mac OSX Tiger. ;)
Speaking of geeky journals, does anyone know of a developer journal for Mac programmers?