Image: CBS / Comedy Central / USA
Actor Jay Thomas who played Eddie LeBec on Cheers apparently wasn't fond of his onscreen wife Carla, played by Rhea Perlman. Thomas made the mistake of making a disparaging remark about Perlman on his radio show, and that was "all she wrote" for Thomas on the series. The writers killed Thomas off in a violent yet humorous way: while performing as a penguin in an ice show, Eddie LeBec died in a freak Zamboni accident. That will teach anyone to mess with Carla.
Read other instances of unhappy actors having their characters killed in creative ways by the writers here.
I suspect that Denise Crosby might have been better off if she had stayed with Star Trek. But I probably don't know the whole story.
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