LeBron James has spent more than two decades producing unforgettable NBA moments, but Philadelphia fans didn't have to wait long to find a new favorite. The basketball legend-turned-76ers star brought a sellout crowd to its feet during Philadelphia's preseason finale against the Boston Celtics, finishing a spectacular half-court alley-oop from Tyrese Maxey with a two-handed slam in the first quarter. The dunk highlighted a night that offered a glimpse of the connection Philadelphia hopes will power its offense this season. The 76ers ultimately fell 125-120 in overtime, but the result took a back seat to the electric reception James received at Xfinity Mobile Arena.