Megan Fox
After watching a few clips online of Megan Fox on SNL, it became very clear her stint on the show was terrible. She really can't act.
The scene with her boyfriend, Brian Austin Green, was disgusting. Any young Transformers fans that stayed up for the show, got a nasty surprise.
Add the unnecessary f-word a new cast member used on-air, in violation of FCC rules and the show was an unfunny, irreverent disaster.