Year One (2009) is a prehistoric comedy adventure directed by Harold Ramis, starring Jack Black and Michael Cera as Zed and Oh, two inept hunter-gatherers banished from their tribe. The film follows their accidental journey through the ancient world, where they stumble upon famous Biblical stories and characters, including Cain and Abel, Abraham, and eventually the notoriously sinful city of Sodom. The plot blends slapstick humor with satirical takes on religious tales, as the duo tries to survive their misadventures and rescue their tribe's women from captivity.

Jack Black delivers his signature boisterous energy as Zed, the overconfident but clueless caveman, while Michael Cera provides perfect deadpan contrast as the meek and logical Oh. Their comedic chemistry drives the film, supported by cameos from actors like Hank Azaria and Oliver Platt. Harold Ramis's direction keeps the pace brisk, embracing the absurdity of the premise with a lighthearted, farcical tone.

While the film received mixed reviews for its uneven humor and received a modest IMDb rating of 5, it remains an entertaining watch for fans of Black and Cera's comedic styles. The movie's charm lies in its playful anachronisms and silly take on historical and Biblical epics. If you're looking for a light, absurd comedy that doesn't take itself seriously, Year One offers 97 minutes of easy laughs and adventurous escapades. Watch it online for a fun, prehistoric romp through a bizarre ancient world.