Pineapple Express (2008)

Dale, a process server, witnesses a murder and goes on the run with his drug dealer, Saul, after dropping a rare strain of marijuana called Pineapple Express. As they try to evade the wrath of a vicious drug lord and corrupt police officers, the mismatched pair find themselves in hilarious and dangerous situations. Their bond is tested as they navigate through a series of misadventures fueled by comedy and action.