Mike S.: One of my favorite cover genres, and one that always leads me to buy the comic, uses the floating head design. Here are a few nominees and there are dozens more examples. Your job is to find them, share the nominees, and opine. (My favorites are in the sub genre of "Talking Heads" where the disembodied characters discuss the action).
Phantom v2 #36 - Steve Ditko art
7 hours ago