They were there to have fun and to be fun. Fun as in, Wouldn't it be fabulous to own this mango slicer because, really, how can anyone live without it? Fun in an I'm-your-friend-so-you-can-trust-me kind of way. FUN with capital letters so everyone would know it was just for a hoot that they came to QVC's Studio Park in West Chester for a chance to be the home-shopping network's newest product host, and not, you know, for the celebrity and the high of persuading people to buy stuff they didn't know they needed. From as far away as California they...