Shark Jumping and 'Fridge Nuking

I ran across the idiom "jumping the shark" recently on the Amazon Al Dente foodie blog in a post suggesting that the current obsession with bacon on the internet and elsewhere has hit its peak and may be in decline, and this may be so inasmuch as I have not seen a post with bacon on No Silence Here in some time now. According to Wikipedia, the expression is from the Happy Days episode where Fonzie jumps over a shark on water skis, after which nothing on the show could be quite as noteworthy. A similar expression, "nuking the 'fridge" is derived from one of the Indiana Jones flicks, in which Indy survives a nuclear explosion inside a refrigerator.