Ebert is weird. Here are some of his ratings:
Usual Suspect - *1/2 <- WTF!?
GLadiator - ** <- WTF!?
Fast and Furious - *** <- what ever
Final Fantasy - ***1/2 <- OMFG
Tomb Raider - *** <- Huh? I think he has a thing for Angelia Jolie
The Cell - **** <- This movie sucks