Infinite Wars: Avengers vs Galactus

AVENGERS versus GALACTUS
The End of the Matter: What If The Silver Surfer Had Not Betrayed Galactus? (Marvel comics)
Where: What if...? #70 When: February 1995
Why: Chuck Dixon How: Joe Barney & Don Hudson

The story so far...
So it was, when the devourer of worlds came to destroy the Earth, that the Fantastic Four stood against him. Toppling his gleeming herald, the Silver Surfer would come to land on the balcony of an inner city studio belonging to the blind sculptress, Alicia Masters.

Though blind, she would see something inside the Silver Surfer thought long dead, and with an awareness of all things great on the planet Earth, the Silver Surfer remembered what it was to be Norrin Radd, inhabitant of Zenn-La. Thus, he rebelled and proved to be the crucial factor in defeating the devourer of worlds, Galactus.

Alas, there are other worlds, where events such as this deviate in minor, but devestating ways. Just such a world saw the Silver Surfer remaining steadfast, forcing the Fantastic Four into retreat in the wake of Uatu's death, and the wounding of Reed Richards. With the FF absent, other heroes are forced to pick-up the slack, but can they possibly stand against the might of Galactus?...

Full Article: http://secretearths.blogspot.com/2007/09/avengers-versus-galactus-end-of-matter.html

Infinite Wars: Flash vs Quicksilver

FLASH versus QUICKSILVER
"The Showdown of the Century!"
Where: Marvel versus DC #2 When: March 1996
Writer: Peter David Artist: Dan Jurgens

The story so far...
Life in the DC and Marvel universes has always been tough, but when cosmic events conspire to endanger both, the heroes of both Earths face a secret crisis that could destroy them all.

Before time two cosmic entities existed, sexless brothers representing the two sides of all that is, was, and will ever be.

Turmoil between the two brought about an end to things as they once were, but in the aftermath their energies were dissipated into space, becoming part of the multi-verse.
Cosmic instabilities, as a result of the actions of various beings of different realities, created instabilities. After eons of recollecting their fragmented thoughts, the two brothers turned, and remembered their existence.

Now they pit their warriors against one and other.

Full Article: http://secretearths.blogspot.com/2006/03/flash-versus-quicksilver-showdown-of.html