As you know, May the Fourth isn't the only holiday this weekend. Free Comic Book Day is tomorrow. Earlier this week, we got a preview of a free Firefly comic. Now, we have a panel from tomorrow's Buffy the Vampire Slayer comic where she appears to be up against a xenomorph.

(Buffy the Vampire Slayer, Aliens)

Good news, everyone! Saturday is Free Comic Book Day, and one of the comics available for free contains Serenity and Star Wars stories, both written by Zack Whedon. The best part is you can read this preview of the Serenity comic right now.

(Firefly)

The miniseries comes out in May, and this particular issue won't be here until July. Still, Tom Baker's Doctor alongside Kirk and Spock? Why does July have to be three months away?

(Star Trek, Doctor Who)

(Hunger Games)

(Mass Effect)

It's actually happening. Sure it's happening in a comic book, but the crossover we've always dreamed about will finally be a reality. The Doctor, Amy and Rory will join the crew of the Enterprise-D this May in a comic book published by IDW.

Even if you don't normally read comics, you may want to make an exception for this. What do you think? Can "Doctor Who" and "Star Trek" coexist in the same comic? Or is mixing these two popular series a bad idea?

(Doctor Who, Star Trek)

Judge Dredd reimagined as an episode of the 1970s British children's series "Bod."