While Bieri's artistry technically depicts a Christmas story, it also nicely captures the undying-even-while-decaying-putrefying-and-hemorrhaging-IQ-points nature of true love. What more could you want for Valentine's Day? (And let's face it, we've all had Valentine's Days that would arguably have been improved by a Zombocalypse.)
Speaking of which, I'm working on my review of Daniel Drezner's Theories of International Politics and Zombies. Short version: it's hilarious.