Grand Theft Auto V's Los Santos contains Big Foot, which is kind of cool. But this is much cooler: Tupac, it has recently been discovered, is a non-playable character. You can find him hanging out on Grove Street and walking around Franklin's neighborhood. He doesn't say much, and he unfortunately won't break out bars from "Ambitionz as a Rider," but still: it's a pretty cool in easter egg in the massive game. The resemblance is uncanny. It's not a mistake.
By the way, 'Pac called that this would happen.