By Denny Dyroff, Staff Writer, The Times ‘Waitress’ at The Kimmel Center. Never underestimate the power of pie – especially fresh-baked cherry pie. Just ask fans of the original “Twin Peaks” series. Pies play a role in the hot musical “Waitress,” which the Kimmel Center’s Broadway Philadelphia series in bringing to Philly this week for a six-day run at the Forrest Theatre (1114...