These unforgettable Marvel moments are guaranteed to stand the test of time. For this list, well be looking at the most cheer-worthy, chill-inducing and heart-wrenching moments in nearly 25 years of Marvel movies. Our countdown includes The Fate of the X-Force, Illuminati Demise, Captain America vs. Iron Man, Killmonger's Death, Thanos Wins, and more! What are your favorite Marvel memories? Let us know in the comments. Watch more great Marvel videos here:Top 10 Best Superhero Team Ups in the MCU: