Free online courses are now available at Carnegie Mellon: Biology, Calculus, Causal Reasoning, Chemistry, Economics, Empirical Research Methods, French, Logic & Proofs, Physics, Statistics, Statics. Some courses are still construction, but it good to find out about these for the upcoming school year.
The Physics course looks terrific - with lots of video, simulations and virtual lab, and online tutor. MIT Open Courseware also has its first year physics course completely available for free - including video here. Great resources. (Thanks HT: homeschool2college)
Open Learning Initiative at Carnegie Mellon University