Another of my favorites is from MARVEL TWO-IN-ONE 60, by Ralph Macchio and Mark Gruenwald, with gorgeous art by George Perez and Gene Day.

The story teams the Thing up with the Impossible Man.
In a hilarious scene, the Thing is taking a shower, and Impossible Man walks in on him. The camera angles perfectly re-enact the shower scene from Alfred Hitchcock's Psycho movie!

Great stuff.

In a party scene, George Perez and several other Marvel staffers appear on-camera.

And there's plenty more twists beyond this.

This was at the tail end of Gruenwald/Macchio's "Pegasus Project" epic, in MARVEL TWO-IN-ONE 53-58, so this was a fun bit of comedy relief to end that part of their run with.