One of Marvel’s best titles on any list,  in the 70’s, has to be Marvel Team-Up! From one issue to the next, you’d get two heroes (Spider-Man, plus one), battling against all sorts of crazy villains, creatures, or just shenanigans of some sort. This was a great formula, and although it sounds like it would be tough to keep going at a great pace, it wasn’t thanks to creators like Gerry Conway (writer), Sal Buscema (pencils), Mike Esposito (inks), and Al Milgrom (cover)! Enjoy!