Nit: "Jumped the shark" or "Jumping the Shark" does not mean "Has started to suck." It's a specific subset of suckage where the subject is clearly aware that they have no new ideas and resorts to ever-more desperate tricks to try to appear fresh and new.
I know (especially by the quick upvotes) that you are preaching to the choir here, but I have noticed a lot of non-thechnical, non-geek, never-even-heard-of-happy-days types beginning to use this phrase (incorrectly) just in the past few months. I've given up explaining who the Fonz is and just accepted this new reality. Once a meme goes mainstream, the primary idiom dilutes with use until its just a curios catch phr…
I don't know if it'd qualify as a meme, but the term "hacker" would be another example of this.