Chicago Sun-Times critic Richard Roeper writes today about his cameo appearance on HBO's ENTOURAGE this Sunday -- as himself reviewing the movie Medellin . It was, he writes, the culmination of eight years as a celebrity reviewer for the syndicated show At the Movies . (He joined Roger Ebert after the death of Gene Siskel in 2000.) "Over the last eight years, my job on the show led to some amazing pop culture moments. Homer Simpson, David Letterman and Mad magazine made jokes about me. I got to sing on a Jimmy Kimmel special(!). I was an answer on Millionaire, Wheel of Fortune and the New York Times crossword puzzle. I had dinner and/or drinks with Robert Redford, Al Pacino -- and I could keep dropping names, but enough's enough, eh? And I got to do at least four other things I'm never going to talk about, at least not in public. Entourage was one of the greatest kicks of all for me. Hope you enjoy watching it as much as I enjoyed doing it."