For some reason, Saruman's death just seemed kind of tacked on. The whole scene just really felt... wrong. And I'm not saying this based on how it originally happens int he books, because I never read them.
It just felt so disjointed and out of place, that I wish they never put it in the film the way it was.
Gandfalf: HI SARUMAN!
Saruman: HI GANDALF!
Gandalf: WHAT IS SAURON DOING?
Saruman: I'M NOT TELLING!
Theoden: GRIMA I LOVE YOU!
Grima: A-WHAHUH?!
Saruman: GRIMA SUCKS!
Grima: A-WHAHUH?!
Saruman: SHOVE!
Grima: STAB!
Saruman: ACK! FALL! DEAD!