Shrek Forever is right. Shrek Forever After was Number One at the box office this weekend for the third week in a row with $25.3 Million for $183 Million so far. Get Him to the Greek premiered in Second Place with $17.4 Million. Killers premiered in Third Place with $16.1 Million. Prince of Persia: The Sand of Time was Fourth with $13.9 Million. Sex and the City 2 was Fifth with $12.6 Million. Marmaduke (which premiered this weekend), Iron Man 2, Splice (which premiered this weekend), Robin Hood, Letters to Juliet rounded out the top ten respectively.