I haven't played any of these PS2 games except for Charlie and the Chocolate Factory, (though on the Nintendo GameCube) but I Googled the worst PS2 games and it told me:
Catwoman, The Sopranos: Road to Respect, American Idol, 25 to Life, Charlie and the Chocolate Factory, The Simpsons Skateboarding, Fight Club, Pimp My Ride, McFarlane's Evil Prophecy, The Shield: The Game, Mike Tyson Heavyweight Boxing, Celebrity Deathmatch, Woman's Volleyball Championship, Gravity Games Bike: Street.Vert.Dirt. and Beverley Hills Cop.