Want to add to the weight of voices recommending the Open University. It's very well regarded in the UK. Used to be that they'd air their lectures in the (very) early morning on UK terrestrial TV.
I watched a movie once where a hostage had been left gagged and tied to the bed holding the tv remote. As he flicked through the channels it came to that channel and some weird looking guy in 70s attire was giving a really dry lecture. As the hostage tried to change the channel the remote fell to the floor.