To be fair I only listed games that I remember sucking really bad. I let the kiddy games slide because those are obviously crap for most older players but the kids like them and that's the age level they are made for. But in my list are games that NOONE should play. I believe they actually make them play these games at Guantanamo and Abu Ghraib...
Noddy - A Day in Toyland (this gets 5 gold stars in suckability), Elf Bowling, MK Advance (I love the MK series but they TOTALLY screwed the pooch on this 'port'), Whac-a-Mole, Star Wars - Jedi Power Battles, anything that ends in 'z', E.T., any Army Men game (that should go w/o saying on any system really), Monsters Inc, No Rules - Get Phat, Cruis'n Velocity, Driven, Men in Black - The Series (cmon you need to stop and pull out your gun to shoot?!), Monster Jam - Maximum Destruction, The Scorpion King, Urban Yeti, ATV Quad Power Racing, Gauntlet - Dark Legacy (another game in a series that was messed up), BattleBots, Wings, Crazy Taxi - Catch a Ride (ANOTHER game that gave the rest of the series a bad name), Simpsons Road Rage, Monster Truck Madness, most every game released in the past 6 months, ...