Somebody wise once said that when it comes to movies and television (theater, too), casting is essential. If you get it right, you're half-way home. Recently, that proved true on CBS's 'NCIS' with the casting of Robert Wagner as Tony DiNozzo's dad. Perfect casting.

Here's another instance where the producers seem to have nailed it. 'Royal Pains' has cast Henry Winkler to play Hank and Evan's father, Eddie Lawson. Yes, Henry Winkler. The Fonz from 'Happy Days,' but if you know you're Henry Winkler IMDB listing, you know he's done so much more than just Arthur Fonzarelli.

In fact, in a case where the casting was off, on the CBS sitcom 'Out of Practice,' he was Stockard Channing's ex and the father of Christopher Gorham, Paula Marshall and Ty Burrell. It never quite worked.

Reunions are hot, you know? On February 12, for example, Oprah reunited (most of) the kids from The Cosby Show, with Bill appearing via satellite. Well, never one to let a good idea go to waste, NBC jumped on the theme. They recently had a Family Ties reunion on Today, so now the morning show is commencing tomorrow with a series of more "Together Again" features. Tune into 8:00 a.m. hour each day so you don't miss a thing!

This very important anniversary was actually a week ago today but I just realized it this morning as I was eating my Happy Days cereal and wearing my Fonz pajamas and Ralph Malph slippers.

September 20th marked the 30th Anniversary of the day Arthur Fonzarelli (aka "Fonzie," aka "The Fonz") put on his leather jacket and a pair of water skis and jumped over a cage filled with stock footage of a man eating shark. Of course, we know that the famous episode launched a very successful catch phrase and web site called "What choo talkin' bout Willis?"

After the jump, a video of that classic TV moment. I haven't seen an episode of Happy Days in years, but it was probably well on its way to getting away from the original intent of the show before this. But yeah, this scene is even more ridiculous than you remember it.

[via LAObserved.com]

Originally I was going to list the best catchphrases in general, not limiting my choices to single words. But, as we only list five in our The Five posts, I knew early on that it would be a near impossible task to list only five favorites. So, here we have it, the five best single-word catchphrases of popular TV characters.

1. "Aeyyy!" OK, so technically this isn't a "word," but you can't deny the popularity of the trademark call of coolness from the one and only Fonz of Happy Days.