It seemed like an interesting experiment – a radio drama with an all-star cast broadcast daily for a week to a national American audience. But reaction to National Public Radio’s radio play “I’d Rather Eat Pants” was swift – and negative. Of the 1,000 e-mails the network received, about 75 percent were negative, and execs are trying figure out why. Cast member Ed Asner is disappointed. “It’s a shame that intellectual newshawks who occupy NPR – or think they are intellectual newshawks – have to be so grouchy.”