After a few misfires in recent years, The Martian marks a major return to form for Ridley Scott. Expertly managing a large ensemble cast and expansive narrative, he's delivered a tense and funny film that ranks as one of the most entertaining of the year (read the full review here). The film isn't just delight for fans of Scott's work or smart, entertaining sci-fi though, but also those who love to pour over the frame for hidden details. There's a lot of very real (or future-adapted) science hidden here, as well as lots of awesome in-jokes and references of a more filmic persuasion. What's remarkable about the easter eggs hidden in The Martian is that, unlike the plethora of references we've come to expect from Marvel and the other big blockbuster franchises, they're not only rather overt, but also often played for genuine laughs. Quite a few are rooted in Andy Weir's source novel, which was noteworthy for its light-heartedness as much as its adherence to science fact, but Scott's also thrown in his fair share of filmmaking winks as well. Here are eight of the coolest (which obviously contain spoilers).