Blended learning has become more and more visible in the past few years. Here is one definition of blended learning:
"Integrates online with traditional face-to-face classroom activities in a planned, pedagogically valuable manner where 25% - 74% of instruction occurs online."
The University of Wisconsin at Milwaukee has a large blended (hybrid) learning program.
The University of Illinois at Chicago has an initiative on blended learning, and each year hosts a national workshop on blended learning.
Penn State has an initiative for blended learning.
Finally, the Sloan Consortium offers faculty development in the area of blended learning.