My favorite games to play are quite numerous. I'll start with my favorite co-op and multiplayer.
Multiplayer
Borderlands 2 partnered with my brother as my number 2, later added my sister as player 3.
Uncharted 3 co-op arena is the mode that I think we always play. I don't like the main game and have never played it, but the co-op is attractive and one of the few things my siblings will reliably play with me.
Star Wars Battlefront: also something we'll play over and over.
Left 4 Dead 2: I've only played this game with strangers on the internet, but it's loads of fun.
Team Fortress 2: Favorite shooter to play online with random peeps.
Crash Bash for party games.
Single player
Any of the first three Spyro the Dragon games.
Any of the first three Crash Bandicoot games.
Animal Crossing New Leaf even though I go through long periods without playing it.
Pokemon Mystery Dungeon: Explorers of Darkness/Sky.
Rocksteady's Batman Arkham series.
Tomb Raider 2013
Phoenix Wright Ace Attorney
Alien versus Predator 2010 is down here because I never really got to play a lot of the multiplayer.
My favorite movie is harder to pick as its hard to get attached to the characters in an hour and a half to two hours. I also like a mixture of action, comedy, and drama in my stories and movies seldom do all three of those things.
I like all of the movies based on the Kamen Rider Double series because unlike most of the KR movies they all tie closely into the canon and serve to develop characters and explain the backstory. The only bad thing is that two of those movies are crossovers featuring the previous year's Rider and the following years and those two stories aren't as good.
I enjoyed the How To Train Your Dragon movies, but I'm not sure which is my favorite.
Also like Batman Beyond Return of the Joker.