At any other company, Mark Gruenwald might have been the HR department’s worst nightmare; at Marvel he was revered, a source of inspiration. After hitting a tough deadline, he might order that the next day be spent writing songs about coworkers, or holding paddleball contests (each paddle personalized with a caricature of its owner), or drawing, or redecorating offices. Smitten with a local newscaster, Gruenwald offered a dollar for every Michele Marsh subway poster that employees could procure; he ended up with about eighty of them, and covered every square inch of his office, lining even the insides of drawers. When he’d had enough of that, he removed the posters, and ordered that all walls and desks in his office be cleared completely—even the phones went into the drawers. The only excess furniture was a small school desk at which his young daughter
could sit when she visited him after school.
After work on the Official Handbook of the Marvel Universe was finished, Gruenwald started a public access cable comedy show, Cheap Laffs, with Carlin and Brown. “We dressed up in costumes,” said Ann Nocenti, who appeared in several episodes. “Mark was the director: ‘Dress like a vampire. Now look vampy.’ It was like Ed Wood on acid.”
(Text from Marvel Comics: The Untold Story)