Impossible choice, they’re all great, so I’ll allow the process of elimination to decide for me:

Reese’s vs. M&M’s — Reese’s
Liar Liar vs. The Mask — depends on my mood, but I guess Mask (for Cameron Diaz)
Hook vs. Ferris Bueller — Ferris
Gremlins vs. Goodfellas — ‘fellas
Batman vs. Back to the Future — “Hey McFly…” (possibly the toughest decision)
Mighty Ducks vs. Karate Kid — Daniel-san
A League of their Own vs. Ghost — early ‘90s Madonna
Jurassic Park vs. Raiders of the Lost Ark — Indy, only because I’m older
Die Hard vs. Lost Boys — McClane, partly because I was put off by the cringe of the steroid-addled saxophonist in the other movie
Fright Night vs. Mrs. Doubtfire — my first horror movie thanks to my friend Amanda across the street
Ghostbusters vs. Tombstone — I stand corrected, this is the toughest decision by far… whoa… damn… uh… well… Eeny, meeny, miny, moe… Tombstone
Monster Squad vs. Goonies — Never say die
Nightmare on Elm Street 3 vs. Friday the 13th Part III — Dream Warriors, because Freddy is comical
Iron Man vs. Captain America — Another one of those “depends on my mood,” grew up a fan of Brooklyn’s finest but Tony Stark excels onscreen like few others
Shawshank Redemption vs. Halloween — ‘shank
Breakfast Club vs. Stand By Me — Saturday detention
And of course we end up with an 8-8 tie. Guess I’ll just have to watch all of them.