As we plan to vacate our building, we were hoping to find each of the liaison librarians an office in the departments they work with. However, space is so tight on our campus that we were only able to achieve this goal with one librarian.
This post at ACRLog provides insight from librarians around the country who have tried holding office hours in their departments and I will be sending around this post because we are thinking about doing this as a compromise solution. http://acrlog.org/2008/05/31/office-hours/ According to the post and the comments, the librarians in question actually had very few official appointments during their posted office hours, but they felt that the informal contact they had with the students and faculty from their departments was a distinct advantage.
In addition to holding physical office hours, what online solutions come to mind to simulate office hours? Has anyone tried IM or chat with their departments, for example?