FIRST LADY'S 'SESAME ST.' EPISODE AIRS TODAY: Also, conservative blogger upset over recent rerun of Oscar the Grouch's swipe at Fox News.

       During her time on the block, the first lady is joined by Elmo, three kiddies, and later, Big Bird, to demonstrate how to plant a vegetable and fruit garden. [Watch clip below.]   

       Meanwhile, across the way in the trash can, Oscar the Grouch was at the center of conservative blogger ire for a two-year-old sketch that jabs Fox News.      

       The show recently rebroadcast a 2007 episode in which Oscar starts his own television channel called "GNN," for Grouchy News Network. Grundgetta, a female Muppet viewer, calls into Oscar's show and threatens to turn the dial. "From now on, I'm watching Pox News. Now there's a trashy news show," she exclaims. [Watch clip below.]       

       The right-wing blogosphere was quick to respond.      

       "The message is clear: I can't even sit my kids in front of 'Sesame Street' without having to worry about the Left attempting to undermine my authority," wrote Big Hollywood's anonymous Stage Right.      

       While Sesame Workshop spokeswoman Ellen Lewis insists the segment was merely meant as a harmless parody, the PBS ombudsman says the joke should have been off-limits.      

       "I don't know what was in the head of the producers, but my guess is that this was one of those parodies that was too good to resist. But it should have been resisted," writes Michael Getler. "Broadcasters can tell parents whatever they think of Fox or any other network, but you shouldn't do it through the kids."