I've just started Patrick Hurley's A Concise Introduction to Logic to pave the way for Mendelson's An Introduction to Mathematical Logic in an attempt to help me understand a couple of books I picked up on Godel's incompleteness theorem. I feel like I should be waiting until next year to learn this stuff in a classroom environment, but I've become totally fascinated with the idea of mathematical logic and the aesthetics of the whole thing that I'm seriously considering making this my primary focus at a university level. On the other hand, maybe it's just a phase; and I'll want to be a firefighter next week.
I've been balancing that with some Lovecraft, Nietzsche, Poe, and Schopenhauer over the past few weeks. All stuff I've had sitting around for a while but managed to put off in favor of watching South Park.