The sci-fi film/television production community is surprisingly close knit. Everyone seems to know everyone else, and it would be difficult to come up with two movies or shows that couldn’t be connected “six degrees of separation”-style. With that in mind, it should come as no surprise that a lot of sci-fi contains nods to other works in the genre. One of my favorite things to do when rewatching sci-fi is to keep my eyes peeled for robots/ships/props/etc. from other TV shows or movies to make cameo appearances. And believe it or not, it’s actually pretty common. Allow me to be your guide as we take a look at sci-fi past and present to explore some of the coolest — and some of the most well hidden – of these appearances.

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