'The Tonight Show' has been a late-night institution for more than 50 years (yes, that's right -- half a century).

Jack Paar, who took over the reins from Steve Allen in '57, put the show on the map, with big-name guests and outspoken antics. Johnny Carson, who stepped in when Paar left, made the show appointment viewing for millions of fans and became one of the most beloved TV hosts of all time.

Now, with Jay Leno's last 'Tonight Show' airing Fri., May 29, and Conan O'Brien taking the desk while Leno makes the unprecedented move to prime time, to a 10 PM slot in the fall, we look back and count down the top 20 moments of 'The Tonight Show.'

This season, Law and Order was looking for a way to get some new energy and interest in the long-running NBC Emmy-winning series, so on the judicial end of the show, they promoted Sam Waterson's Jack McCoy to DA and cast Linus Roache as Assistant District Attorney Michael Cutter. Roache is one of those familiar faces that you've seen on other shows, maybe a movie or two, but here on Law and Order he's making you sit up and take notice. At least that's how it is for me. After watching the first two new episodes when the show returned recently, I wanted to know more about this guy. For starters, why did he remind me of a young Bobby Kennedy?

Well, it turns out that Linus Roache played Robert Kennedy in the mini-series, RFK. The Kennedy connection was even alluded to in last week's episode; at the end of the show, after McCoy had to defend his decision to prosecute overzealous New York City cops by taking the stand in open court, Roache's character, Cutter, gives him a tie pin that once belonged to RFK. With the last line of the show, Cutter says, "I found it on EBay."

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