Bad Grandpa .5 gives you a whole new perspective on the world of Irving Zisman with bonus scenes and pranks also featuring Spike Jonze as "Gloria" and Catherine Keener as Irving's wife "Ellie", plus a look at the evolution of Johnny Knoxville's naughty alter-ego, the makeup effects, and a behind-the-scenes peek at the idiocy it takes to make a hidden camera movie in public.

Eighty-six-year-old Irving Zisman is on a journey across America with the most unlikely companion: his eight-year-old grandson Billy, in "Jackass Presents: Bad Grandpa". Jackass characters Irving Zisman (Johnny Knoxville) and Billy (Jackson Nicoll) will take movie audiences along for the most insane hidden camera road trip ever captured on camera. Along the way Irving will introduce the young and impressionable Billy to people, places, and situations that give new meaning to the term "childrearing". The duo will encounter male strippers, disgruntled child beauty pageant contestants (and their equally disgruntled mothers), funeral home mourners, biker bar patrons, and a whole lot of unsuspecting citizens. Real people in unreal situations, making for one really messed up comedy.

Dolph Springer wakes up one morning to realize he has lost the love of his life, his dog, Paul. During his quest to get Paul (and his life) back, Dolph radically changes the lives of others: a pizza-delivering nymphomaniac, a jogging-addict neighbor in search of completeness, an opportunistic French-Mexican gardener, and an off-kilter pet detective. In his journey to find Paul, Dolph may lose something even more vital: his mind.

A young woman's nightmarish past returns to trigger off a bizarre phobia she was once cured of; an intense fear of space, eased only by closeness to walls. She becomes a psychological survivalist when her remote house suddenly becomes a spiritual battleground, as evil forces gather to torture her during a night of terror.