The rest of the world might be focused on first lady Michelle Obama coming to The Street today to show Elmo and some of the children how to plant their own vegetable gardens. And symbolically, her appearance to help launch this special season is huge. But screening the season premiere, I wasn't thinking such cosmic thoughts about the sociology of the show. Instead, I was reminded of how good "Sesame Street" made me feel -- and how much fun it was to watch.