The latest edition of the PBS series P.O.V., premiering Tuesday night at 10 ET (check local listings), is a potpourri program called Short Cuts, an hour of six entertaining short films. They're all good -- but two of them, animated versions of conversations recorded for the oral history project StoryCorps, are gold. And it's gold that, like the Simpsons shorts originally featured on The Tracey Ullman Show, should be spun off into their own regular series. It could be the most popular, and profitable, and even important, new PBS series in years...