I don't have it handy either--it could go either way as to whether any of them had seen Saruman before, I think. I don't remember any of them talking like they'd seen him before...
Did you notice how much shorter G's beard is?
I don't have it handy either, but the conversation in the books between the three regarding the first old man in white they saw in the woods was that he met the description of Saruman... That Saruman had been described to look like an old man in white. None of them had ever seen him, so they assumed it was him.
And in the book, when Gandalf does appear, he acts weird. He acts like Gandalf is just a vague memory... "hhmm... yes, I suppose I was Gandalf". I don't know if he was actually having to remember, or if he was just putting them on and acting aloof. He later seems to return to the old self.