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Micah
Since: Jan, 2001
2011-05-05 12:28:22
Not-So-Small Role, Narrowed It Down to the Guy I Recognize, and Contractual Immortality.
132 is the rudest number.

This may not be a trope, but I could have sworn I'd seen it around before.
Essentially, the trope is a spoiler trope in live-action casting. If a MAJOR character is played by a name actor, we are USUALLY assured that character will survive though the course of the movie or show. If a MINOR character is cast as a name actor, that character will surely return to become important later in the film/show.
If this is not currently a trope, we need to YKTTW it ASAP.