Kevin Wolf / AP

The 2012 Kennedy Center Honorees, from left, John Paul Jones, Buddy Guy, Jimmy Page, Natalia Makarova, Robert Plant, Dustin Hoffman, and David Letterman pose for a group photo after the State Department Dinner for the Kennedy Center Honors in Washington on Saturday.

Music legend Led Zeppelin was recognized on Sunday alongside entertainers from stage and screen for their contributions to the arts and American culture at the Kennedy Center Honors, lifetime achievement awards for performing artists.

The eclectic tribute in Washington alternated between solemn veneration and lighthearted roasting of honorees Academy Award-winning actor Dustin Hoffman, wisecracking late-night talk show host David Letterman, blues guitar icon Buddy Guy, ballerina Natalia Makarova and Led Zeppelin. 

"I worked with the speechwriters -- there is no smooth transition from ballet to Led Zeppelin," President Barack Obama deadpanned while introducing the honorees in a ceremony in the White House East Room.

Friends, contemporaries and a new generation of artists influenced by the honorees took the stage in tribute.

"Dustin Hoffman is a pain the ass," actor Robert De Niro said in introducing Hoffman, the infamously perfectionist star of such celebrated films as "The Graduate" and "Tootsie."

"And he inspired me to be a bit of a pain in the ass too," DeNiro said with a big smile.

At a weekend dinner for the winners at the State Department, Secretary of State Hillary Clinton noted that the performing arts often requires a touch of diplomacy as she toasted Makarova, a dance icon in the former Soviet Union when she defected in 1970. 

Tiler Peck of the New York City Ballet, who performed in "Other Dances," one of Makarova's signature roles, said she has studied her idol's technique for years. 

"This is a role she created," Peck said. 

Despite the president's misgivings about his own speech, the performance at the Kennedy Center navigated the transition from refined ballet to gritty blues music when the spotlight turned to Guy, a sharecropper's son who made his first instrument with wire scrounged from around his family's home in rural Louisiana. 

"He's one of the most idiosyncratic and passionate blues greats, and there are not many left of that original generation," said Bonnie Raitt, who as an 18-year-old blues songstress was often the warm-up act for Guy. 

George "Buddy" Guy, 76, was a pioneer in the Chicago blues style that pushed the sound of electrically amped guitar to the forefront of the music. 

"You mastered the soul of gut bucket," actor Morgan Freeman told the Kennedy Center audience. "You made a bridge from roots to rock 'n roll." 

In a toast on Saturday night, former President Bill Clinton talked of Guy's impoverished upbringing and how he improvised a guitar from the strands of a porch screen, paint can and his mother's hair pins. 

"In Buddy's immortal phrase, the blues is 'Something you play because you have it. And when you play it, you lose it.'" 

It was a version of the blues that drifted over the Atlantic to Britain and came back in the finger-rattling rock sound of Led Zeppelin.

Jimmy Page, 68, was the guitar impresario who anchored the compositions with vocalist Robert Plant, 64, howling and screeching out the soul. Bassist/keyboardist John Paul Jones, 66, rounded out the band with drummer John Bonham, who died in 1980. 

The incongruity of the famously hard-partying rock stars sitting in black tie under chandeliers at a White House ceremony was not lost on Obama. 

"Of course, these guys also redefined the rock and roll lifestyle," the president said, to laughter and sheepish looks from the band members. 

"So it's fitting that we're doing this in a room with windows that are about three inches thick -- and Secret Service all around," Obama said. "So, guys, just settle down." 

The gala will be aired on CBS television on Dec. 26.

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Looking for the best thing on late night TV Tuesday? No sweat. Or, perhaps more accurately -- sweat. Jimmy Fallon's fitness competition with First Lady Michelle Obama on "Late Night" was the highlight.

Fallon said he was inspired by Obama's exhortations to be healthier, but after he heard her say that it's hard to inspire our children to get up and move when they see us lying on the couch watching TV, he had one bone to pick: "Yes, exercise is important, but it's also important to be back on that couch at 12:37 so you can watch this show," he said.

The first lady's "Let's Move" campaign has sent her on the talk show rounds recently, and she's proved that she can take on just about any television host. Last week, she beat Ellen DeGeneres in a push-up competition. Tuesday night, Fallon visited her at the White House for a potato-sack race, hula hoops swing-off, dodge ball toss, Tug-o-War and a session of push-ups.     

Needless to say, the FLOTUS beat Fallon soundly. And bonus: Bo, the Obama family's adorably fluffy dog, also made a cameo.

As Fallon noted at the end, it's about having fun -- it doesn't matter whether you won or lost. But Obama had a different perspective: "It matters."

Also Tuesday night, former Pennsylvania Sen. Rick Santorum shocked everyone with a sweep of the GOP presidential contests in Missouri, Colorado and Minnesota, beating frontrunner Mitt Romney.        

On "Live!," Jimmy Kimmel pointed out the fact that the Missouri primary was a waste of everyone's time (that is, since none of the state's delegates were awarded last night). Kimmel then went on to laud Newt Gingrich for staying in the race. After all the reports of infidelity, this is turning out to be the one commitment that Gingrich has been able to stick with, Kimmel joked.  

Kimmel also pointed to a recent comment from Romney that Americans were the "only people on Earth" who put their hands over their hearts when hearing their national anthem -- and then Kimmel showed a number of photos of non-Americans doing just that, and introduced an alleged campaign ad Romney has put out that seemed a little "shaky" on the details: America has the tallest mountain in the world -- Mt. Rushmore; America has the biggest city on the planet, Houston. You get the idea. Nothing like a little hyperbole to kick the campaign into high gear, eh?      

And for those who are wondering where Jon and Stephen went -- "The Daily Show with Jon Stewart" and "The Colbert Report" aren't running fresh shows this week. Maybe they're off figuring out what to do with all that Super PAC money.

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