Hard course (electrical engineering, laplace fun!), shit lecturer (complacent, dismissive of questions), skipped lecture (never although I probably should have just stuck my face in the course books).
I have literally never used anything I learned on that part of the course however.
I'm doing this course as part of the requirements for a degree in Eng. Technology, focusing on Software. It's common to all streams, but none of the subsequent courses Software students have to take will use this material. Damned if it isn't fun though.