WATCH: Joe Piscopo channels Sinatra, sings about N.J. at inaugural gala

WASHINGTON -- Joe Piscopo resurrected his famed Frank Sinatra impersonation at a D.C. hotel Thursday night. Well, kind of. The comedian, who rose to fame portraying the Hoboken-born legend on "Saturday Night Live," didn't don a gray wig or anything. Nor did he sing the original words to "New York, New York" when he stepped on…