Applications of (higher) category theory to computer science

Dear colleagues, Could someone recommend a good text on the subject? I am aware of the book by Barr and Wells; however, unlike that book, which is intended for computer scientists who want to learn category theory, I am looking for something, in a way, opposite: a source for those who know category theory but not much of computer science. Many thanks in advance. - Dee [For admin and other information see: http://www.mta.ca/~cat-dist/ ]