I've been using Coursera on and off for a couple of years. Just recently I've enrolled in 'Computer Architecture' from David Wentzlaff (Princeton) and Algorithms II from Bob Sedgwick and Kevin Wayne. If you're into that sort of thing, these are pretty fine. I've been kicking myself that I didn't do electrical engineering since graduation. Just a celebratory 'what an age we live in! Yay free stuff!' post. Are others using Coursera or other sites?
Athlon 620e, Asus 7790 (1GB), 8GB KVR 1333, Asus M4A785T-M, Samsung 830 256GB, WD Green 1TB, WD Green 2TB, E-mu 1212m, Dvico HD Dual Digital 4 TV tuner, Hyper 212 Evo (mounted ironically), Antec Earthwatts Platinum 450W.