By Denise Warner Posted Apr 26th 2010 02:00PM The freshmen hit 'Glee' just aired its Madonna episode to high praise. With the popularity of the show's songs on iTunes, it's no wonder other artists would want a piece of the musical pie. For example, one Britney Spears. Her manager, Adam Leber, tweeted about wanting an all-Britney episode, hoping to make it a trending topic on the social media site. Then 'Glee' creator Ryan Murphy told EW.com that he was considering it. While we love Britney's music, there are others who could use a little 'Glee' muscle -- like New Kids on the Block. We think the original boy bands' hits would be perfect for the series. ( And so does member Joey McIntyre, who told PopEater, "I think our music would be a great fit for 'Glee' -- and selfishly speaking, I think I would be too. So I say to the NK Nation, 'Let's get this!!'" ) If we were writers on 'Glee,' this ...