They've been listed as one of the "Top Ten Hidden Treasures in America." They've gotten the nod on the Food Network's Best Of. Folks from all over the world can see their place talked about in-flight on Delta Airlines. And now you can frequent the Philadelphia Filly -- the little cheesesteak cart that could - not only at lunch, at 16th Street and Broadway, but also at night, at 16th and Market Street. For years, Philly natives Sally Rock and Dale Goin have been feeding an ever-growing legion of Denver faithful, slapping together authentic Philly cheesesteaks and serving up fresh soups for the lunchtime crowds; now Rock's son, Willy Killhour, wraps up monster double-meat, double-cheese sandwiches for LoDo bar-hoppers. They may not have fancy silver, linen tablecloths or even tables, but if you're looking for the real deal -- for honest American street cuisine that's hot, fast and filling enough to keep you going all afternoon (or well into the next morning) -- Philadelphia Filly is tops.