The blog's name is actually a sound effect from Thor #340, the fourth issue of Walt Simonson's acclaimed mid-1980s run on the book. Simonson's opening storyline (retroactively named The Ballad of Beta Ray Bill) is the narrative that hooked me on superhero comics. (Prior to that I was primarily a collector of sword-and-sorcery titles like DC's Warlord and Marvel's Conan the Barbarian.) Although Simonson is a well-regarded writer-illustrator, it's perhaps his sound effects (produced via collaboration with letterer extraordinaire John Workman) that are most notorious among hardcore comic book fans. In picking out a name for the blog, I considered such beauties as "Shrrakadoom!" (Thor #351), "Karakathoom!" (Thor #362), and "Kkrakkadoooum!" (Thor #380). But I settled on Kracalactaka! on the basis of this panel:
How can anyone resist this sound effect? It's the noise generated as the Norse god of thunder and his horse-headed alien doppelganger clash their mystical uru-metal mallets together, people! Cue the wailing guitars, and let's get down to some superheroic gaming!