K.J.
I wouldn't be worried at all. I agree with the other moms, boys are definitely slower than girls when it comes to talking. My son just happily babbled and grunted and pointed at what he wanted until he was almost one and even then we only got a few words out of him (ma, dada, ba (for bottle) and kuck (for truck). My daughter at age one was putting words together and saying everything so it was really strange for us.
I have friends who also have little boys and they say the same thing, they just don't talk as early or as much. We were laughing the other day because my niece, who is 23 months old, wanted a drink so she said "I'm thirsty may I have a drink of juice please" whereas my son who is only a little younger (he's 20 months) just pointed and said "cup". I think boys just express themselves differently - it is definitely not anything to worry, especially at his age.