Dennis Hopper—undead, gigantic and loose on the streets of New York and Los Angeles? This is a bad trip, man! In fact, it's an ad campaign by skater brand Vans to promote clothes and shoes decorated with the Hollywood legend's artwork and photographs. The man died in May 2010, but the new billboards—featuring a photo of Hopper by Mary Ellen Mark, in some cases a huge painted version of it—proclaim "Hopper Lives," apparently a riff on the "Bird Lives!" graffiti that appeared around NYC following jazz great Charlie "Bird" Parker's passing 56 years ago.