What's new and/or interesting on TV this week. Diners, Drive-Ins and Dives (Mon, 10PM-10:30PM, Food Network) One of our favorite Food Network shows visits Philly again, this time in order to sample scrapple at a diner. Host Guy also visits other neighborhood joints in St. Louis and Virginia. Live to Be 150... Can You Do It? (Tue, 10PM-11PM, ABC) This Barbara Walters special report on aging takes a look at ways to increase longevity, and......