Increasing Student Engagement and Motivation: From Time on Task to Homework - This informative publication from NWREL provides a synthesis of the research as well as strategies and suggestions on the topic.
Intrinsic and Extrinsic Motivation - This resouce is from the Vanderbilt Center for Teaching
Motivation Breakthrough - This website contains resources from Richard Lavoie, including many downloadable articles on the topics of motivation and learning. Click here to read an interview with Richard Lavoie from USA Today that includes Rick's "6 P's of Motivation."
Motivation to Learn: An Overview - This site provides a summary of theories of motivation from an Educational Pyschology perspective.
Stuff from Dr. Curtis Chandler (Check out Curtis' Blog here)
A few Podcasts on the Topic...