I completely buy the idea that there's potential for new learning tools in tablets (or any computing device over books) but has anyone actually done it? Has any

I completely buy the idea that there's potential for new learning tools in tablets (or any computing device over books) but has anyone actually done it? Has anyone moved from potential and successfully effected this? At the very least tell me you're going to makes copies of lectures and video examples of everything available. Changing from paper to electronic still images is kinda "meh".