KFYI #52: Science fiction jumps the shark

It's bound to happen sooner or later. Your favorite book series, TV show or movie... Things are going along smashingly and then all of a sudden-- WHAT WERE THEY THINKING?

When it happens, we say they've "jumped the shark", paying homage to the time when Fonzie ski-jumped over a shark pen. Yes, the writers of the show managed to write it in.

Let's talk about some of the SF/F serials which have jumped the shark, and which ones we think might be next. Oh, and our answers might surprise you.