Teaching with a colleague can be tremendously energizing, a great experience for teacher and student alike. But it also presents some special challenges. Here are some suggestions for making it work.
Vanderbilt Center for Teaching has this helpful introduction to Team Teaching
10 Commandments of Team Teaching (advice from two Stanford professors)
Herman Beavers & Dennis DeTurck, Shall We Dance? Team Teaching and the Harmony of Collaboration, University of Pennsylvania Almanac
From Tomorrow's Professor Newsletter, Team Teaching and Student Learning: A Rough-and-Tumble Enterprise
University of Melbourne, Integrating the disciplines: successful interdisciplinary subjects (best practices in interdisciplinary teaching, from planning through assessment)
Tilburg University video, Team Teaching Liberal Arts & Sciences
Team Teaching -- With a Punch! (video from Washington State University)