Benny Benassi, the Italian DJ-producer who calls his sound “hypnotech” (we call it the kind of thumping, big-room electrohouse that’s exemplified by productions such as “Satisfaction” and “Who’s Your Daddy?”), hits the decks at the glossy Pacha. He's got a hotshot opener to get the party going, Ultra Records' dBerrie. Go to the club's website to get on the reduced-admission list.