Steranko's FF

I always thought this cover by Jim Steranko was the definition of cool and remain puzzled that it didn't grace an annual, a premium hardcover collection or an original novel ... but rather an index of Fantastic Four comics. Not to slight those indices; in the pre-Internet days (remember those?), they could be invaluable. Still ... I can't help but feel this one went underutilized. Check out more index covers here. (But I'll be honest with you: none of the other ones come close to this.)