Jonah Hill's directorial debut "Mid90s" ends with what is seemingly the film's inspirational spark. It's a sequence shot in the style of those '90s homemade skate videos, the ones that would have been passed around on VHS tapes housed in battered paper covers. Set to classic rap music, the style is grainy, handheld, filmed mostly with a fish-eye lens, following teen boys on skateboards as they grind rails, kickflip and ollie. They hang out in parks, cruise in the backseats of cars and taunt the camera, helmed by a skater nicknamed "Fourth Grade." It's a perfectly executed slice of '90s nostalgia, and the film begs the question, just who are these kids?