Who doesn't love a good movie cameo? That momentary rush of joy when you notice a big star in a blink-and-you'll-miss-it role is exhilarating, especially if you're experiencing said cameo with a buzzing opening night crowd.
And while most of these brief appearances are there for show - with the filmmakers intentionally making them obvious so viewers can fully enjoy them in the moment - others are hidden away, designed to be difficult (or even impossible) to notice.
While these sneaky cameos aren't always as fun as some of the more blatant ones we've seen over the years (if you were there for the opening weekend of Spider-Man: No Way Home, you'll know how much of a pop Charlie Cox's Matt Murdock scene got), it's still highly satisfying when, years down the road, you learn that one of your favourite movies had an A-lister hidden in plain sight all along.
So, here are some of the slyest examples - those well-hidden movie cameos that blend into the background, are covered with costumes and makeup, or even, in one strange case, hide in a reflection that the camera unwittingly picked up.
10. Bill Murray (Dumb And Dumber To)
Comedy legend Bill Murray loves popping up in random cameos, from his appearance in Get Smart as an agent stationed inside a hollowed-out tree, to his scene-stealing work in Zombieland - and its 2019 sequel.
However, a cameo of his that isn't so easy to spot can be found in 2014's Dumb and Dumber To, where the Ghostbusters icon appears as Harry's drug dealer roommate, Ice Pick, who whips up a batch of his "rock candy" as Harry and Lloyd watch on.
With his Walter White-inspired yellow lab coat and a mask that covers the entirety of his face, it's almost impossible to tell that Murray is playing this role. He does get a line of dialogue, but with the mask muffling his voice, it's still quite tough to make out the actor's distinct tones.
Dumb and Dumber To was rather underwhelming on the whole, but Murray's cameo is one of the funnier beats in the film - a testament to his ability to produce great laughs, despite not having much to work with.