rhadamanthine - Strictly and uncompromisingly just. This word is eponymous, meaning it comes from someone's name; Rhadamanthus was, in Greek mythology, the son of Zeus and Europa who was made a judge of the Underworld.
Augean - abominably filthy -or- extremely difficult
acedia - boredom, apathy... a good one to doodle in class -- your teacher's not likely to know it!
salmagundi - the literal meaning is a dish of chopped meat, onions, anchovies, eggs, oil and seasonings.
Figuratively, it means a miscellany, medly, mixture or hodgepodge.
schadenfreude - pleasure derived from other's misfortune -- comes up more often than you might think --
I've heard it on an episode of Ballykissangel and my sister saw it in her freshman English Comp textbook!
cerumen - ear wax. Gross, aren't I?
coprophagous - excrement-eating (to put it nicely) (this is a good one to call people!)
nullifidian - a person who lacks any faith or religion - a skeptic or unbeliever. I found this gem in George Eliot's Middlemarch.
cerulean - sky-blue. True, this isn't a hard one, but it is lovely, isn't it?
glabella - the little bald spot between your eyebrows - who knew it had a name??