See if ''Big Brother 4'' is a winner or a loser
VIEWERS 8.8 million on Tuesdays, 9.5 million on Wednesdays, 7.1 million on Fridays
WHAT HAPPENED Exec producers Arnold Shapiro, Jon Kroll, and Allison Grodner blew the roof off the peepfest by throwing five exes into the mix, which prompted the meltdown of Scott the waiter, who couldn't stand living with his old squeeze Amanda the bar manager, who then jumped into bed with Dave the Army ranger to enjoy some unprecedented hibity-dibity (most of which CBS aired).
WHY IT WORKED ''The first-ever sex wasn't something we encouraged,'' admits Shapiro. ''But we're very proud of the ratings.'' He should be; ''BB'' consistently won its time slot among young adults, making it the most successful installment ever.
LASTING CONTRIBUTION TO THE GENRE Jack's use of the phrase ''buzzard crotch'' to describe Dana's sex appeal.