It's a strange sensation to see a character from a different franchise pop up in a TV show or movie. Like a college friend dropping by your high school reunion; it's not unwanted, but it's definitely weird.

Some appearances are more subtle than others. But I'll never complain about a Ghostbuster dropping by unexpectedly, even if they look right down the camera and wink directly at me.

Here are a few times your favorite characters popped up where you least expected them:

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

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20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

20 Actors Who Showed Up In Different Franchises (In Their Famous Roles)

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