One of my many hats includes that of liaison to our religious studies dept. If you ask for help, it is your duty to summarize your findings so your colleagues on PRT-LIBN may learn about the tools of the trade.
Liaisons are an effective way to truly show how the library and the faculty are partners.
We can make an analogy with the sciences. I have often said that the library in a non-science environment acts as a laboratory. If we carry that further then the librarians are that part of the education process that takes the student or researcher from the theoretical to the practical applications. The librarian also gleans from the reference help given what research needs are for the students form a curricular point of view. This daily evaluation as it were can be extremely important to academic departments when they order materials.