[Gothmog]

Saruman: You cannot pass!
Grima: Geez...Sire, read the script again!

OR

Grima has taken lessons in Witchcraft and Wizardry of Saruman. Unfortunatly he still had to cheat to have the tip of his staff to glow.

OR

Saruman: Tonight you will taste Man flesh!
Grima: Eh...master? Forgot your contacts? There's no orcs down there?

OR (to continue on my earlier theme)
Saruman's singing wasn't much better than Boromir's horn-concerts...