I echo everybody who said learning the parts of the cell was useless... unless you were to become a cell biologist or something. lol Also:
Ancient history - I actually didn't gaf what the Ancient Greeks and Romans did, because it was just that - ANCIENT!
War history - as if this world wasn't bad enough now...
Music history - I really liked making it, though! I'm not talking history as in when the Beatles formed (1964, duh lol), but history as in what type of music Bach composed. Ugh!!!
Art history - again, the art part was fine, but who CARES how Van Gogh died? I came to PAINT like him, not do a freaking REPORT on him!
Actually, come to think about it, history is really just boring trivia and not so much something that'll stick for life.