Another I love is the
X-MEN: HEROES FOR HOPE book, published in 1985, with some really wild writer/penciller/inker combinations.
Such as Harlan Ellison/Frank Miller/Bill Sienkiewicz on a Wolverine story!
Or how about Stephen King/Berni Wrightson/Jon Muth!
And a two-page future X-Men/Evil Mutants segment by Alan Moore/Richard Corben.
It was hit-and-miss admittedly on some of the other pages, but the hits outweighed the misses, at least for me.
I also got a kick out of a comic book being done in the spirit of the Live Aid concert, to give all profits raised to fight starvation in Ethiopia.
All packed behind a highly poster-worthy Arthur Adams cover. As a matter of fact, I purchased the 11" X 17" promotional poster of it from my local comic shop dealer!
DC released a similar
HEROES AGAINST HUNGER book shortly after, but Marvel's jam benefit book was I think much better, despite a few nice pages by Neal Adams and others.
