With the help of a continuously embattled (but still Hot) Chris Brown, last week, Keri Hilson debuted the song and video “One Night Stand” from her album, No Boys Allowed. The Hot duet, scorching from the recording to the dark video and its synchronized dance breakdown, brought to mind all the dope duets in Hot R&B over the years. Not the lovey-dovey Ashford & Simpson or Marvin & Tammi type joints, but the make your ears melt and make you turn it down when people come around type tracks. There’s too many to narrow down, but here are a few you’ll need to get a hold of ASAP.