The Black Eyed Peas have been hogging all the joy at the top of the Billboard Hot 100. “Boom Boom Pow,” the lead single from their album “The E.N.D.,” held the No. 1 spot for 12 consecutive weeks, giving way to “I Gotta Feeling,” the second single, which marks its eighth week in a row at the top this week. That’s 20 straight weeks for the Peas… and that’s a record, surpassing Usher’s 19 consecutive weeks achieved in 2004 with “Yeah” and “Burn.”