i just thought of another one. i don't know if it has a good translation in english, i would be interested to learn it if it does :
décalé(e)
a very useful word. the litteral meaning is something like "shifted" or "deplaced". one very common meaning can be translated as jet-lagged, but it can also be used in a similar sense, when "someone" (ahem) has managed to get themselves completely off a normal timetable, for example not going to bed until 4 in the morning, without the assistance of long-distance air travel (or faster than light travel, or any travel at all, but all within the comfort of their own home).
it also has a more figurative meaning, for something which is "shifted" from the norm, like the opposite of "mainstream".
any ideas ? a word like that would be really useful to me in english, for obvious reasons.
(goodnight...)