A motorcyclist was killed in Greenpoint early Sunday morning when he was hit and killed by a drunk driver. Brian Sitarevich, 21, of Ridgewood, was hit and killed at 1:30 a.m. on Greenpoint Avenue when he collided with a Ford Explorer trying to make a left turn onto Humboldt Street. Sitarevich was taken to Bellevue Hospital where he pronounced dead on arrival. The driver of the Explorer, 33-year-old Daniel Levens of Massapequa, was charged with driving while intoxicated.