a) must be about a giant monster movie (or reasonably large monster, heck, any movie that has a decent monster in it...I am not counting the horrifically cute and perky Meg Ryan),
b) probably doesn't rhyme,
c) 5 syllables, 7 syllables, 5 syllables.

The supersized Tor Johnson was famous for his roles in Ed Wood's B-movies, including Bride of the Monster and Plan Nine From Outer Space. This week's haiku is from Eric, of Screaming Monkey Labs:

TOR JOHNSON (1903-1971)

Though technically
Tor not big giant monster
He could still crush you