Lucky's Last Chance's Manayunk location just put the PK Burger on the menu. It's a quarter-pound patty with Cheddar, two potato-and-Cheddar pierogies from The Pierogie Kitchen, caramelized onions, sour cream, and a side of sauerkraut.
Philly.com, http://www.philly.com/philly/blogs/food_department/6-outrageous-new-burgers-in-Philly.html
