Dancer Jedi participates in the ‘Daddy Dance Off’ on father’s day at Lee Jone’s House music party called Sundae. The Sundae party is probably Philadelphia’s largest and definitely the best open-air dance party. Sundae for 2009 is being held each Sunday at the Piazza at Schmidt’s in Northern Liberties. The party starts at 12 noon and goes until 9:00 PM. With two after parties following.