Whole M.I.T. curriculum online for free.
You don't get credit for their courses, but instead you get the ability to get ahead at your own pace and possibly test out of many undergraduate courses, especially in the hard sciences. The best thing that can be done with an undergraduate education is to get ahead through these means--skip the technical stuff that requires massive memorization but doesn't affect character. Get the skills through these sorts of ways (for free, no less) and concentrate on application, career, and developing yourself in other educational facets!
A word from your friendly professor.