The bootylicious Jennifer Lopez was on “The Tonight Show with Jay Leno” earlier this week promoting her new album, Love?, as well as her judgeship on “American Idol” when Leno asked her about her first big-deal dancing gig. Lopez revealed that it was on a 1991 American Music Awards performance with pop darlings New Kids on the Block. Of course, Leno then pulled out a clip of the performance and showed it to the audience, appearing to mortify J. Lo. […]