This year, someone on Youtube called The Sleepy Skunk has posted one that I think may be the best movie mashup of all time, using 324 clips from 197 different films. The clip-by-clips credits are listed on his Tumblr.
Here's the video:
The complete list of films featured include:
The ABC’s of Death; About Time; The Act of Killing; Adore; After Earth; All Is Lost; American Hustle; Anchorman 2; Another; August: Osage County; Bad Grandpa; Baggage Claim; Battle of the Year; Beautiful Creatures; Before Midnight; Berberian Sound Studio; Best Man Down; The Best Man Holiday; The Big Wedding; Black Nativity; The Bling Ring; Blue is the Warmest Color; Blue Jasmine; The Book Thief; Broken City; Bullet to the Head; The Butler; Byzantium; The Call; The Canyons; Captain Phillips; Carrie; Charlie Countryman; Chinese Zodiac (CZ12); Cloudy With a Chance of Meatballs 2; The Colony; The Conjuring; The Counsellor; The Croods; Dallas Buyers Club; Dark Skies; Dead Man Down; Delivery Man; Despicable Me 2; Dhoom 3; Don Jon; Drinking Buddies; The East; Elysium; Emperor; Ender’s Game; Enough Said; Epic; Escape From Planet Earth; Escape From Tomorrow; Escape Plan; Evil Dead; The Family; Fast and Furious 6; The Fifth Estate; Filth; 47 Ronin; 42; Frances Ha; Free Birds; Frozen; Fruitvale Station; G.I. Joe: Retaliation; Gangster Squad; The Gatekeepers ; Getaway; Gloria; God Loves Uganda; A Good Day to Die Hard; Grace of Monaco; The Grandmaster; Gravity; The Great Beauty; The Great Gatsby; Grown Ups 2; The Hangover Part III; Hansel & Gretel: Witch Hunters; A Haunted House; The Heat; Her; The Hobbit: The Desolation of Smaug; Homefront; The Host; How I Live Now; Hummingbird (Redemption); The Hunger Games: Catching Fire; I Give It a Year; I’m So Excited; Identity Thief; The Incredible Burt Wonderstone; The Informant; Inside Llewyn Davis; Insidious: Chapter 2; The Internship; Ip Man: Final Fight; Iron Man 3; Jack the Giant Slayer; Jobs; John Dies at the End; Kevin Hart: Let Me Explain; Kick-ass 2; Kill Your Darlings; The Kings of Summer; The Last Exorcism: Part II; The Last Stand; Last Vegas; The Lone Ranger; Lone Survivor; Lords of Salem; Machete Kills; Mama; Man of Steel; Man of Tai Chi; Mandela: A Long Walk to Freedom; Metallica: Through The Never; Metro; Monsters University; Mood Indigo; The Mortal Instruments: City of Bones; Mr, Nobody; Mr. Nobody; Much Ado About Nothing; Mud; Nebraska; Now You See Me; Oblivion; Oldboy; Olympus Has Fallen; Only God Forgives; Out of the Furnace; Oz: The Great and Powerful; Pacific Rim; Pain and Gain; Paranoia; Parker; Percy Jackson: Sea of Monsters; Philomena; The Place Beyond The Pines; Planes; Populaire; Prisoners; The Purge; R.I.P.D.; Red 2; Riddick; Romeo and Juliet; Room 237; Runner Runner; Rush; Saving Mr. Banks; The Secret Life of Walter Mitty; Shadow Dancer; Shanghai Calling; Short Term 12; Side Effects; The Smurfs 2; Snitch; The Spectacular Now; Spring Breakers; Stand Up Guys; Star Trek Into Darkness; Stoker; Stories We Tell; Texas Chainsaw 3D; This is the End; Thor: The Dark World; The To Do List; To The Wonder; A Touch of Sin; Trance; Turbo; 12 Years a Slave; 21 and Over; 22 Bullets; 2 Guns; The Unknown Known; Upside Down; Upstream Color; V/H/S 2; Violet and Daisy; Walking With Dinosaurs; The Wall; Warm Bodies; The Way Way Back; We’re The Millers; White House Down; The Wind Rises; The Wolf of Wall Street; The Wolverine; World War Z; The World’s End; and You’re Next.
Again, you can find the clips listed in order on his Tumblr.