Here's a word/concept I especially dislike:
Deconstruction: a philosophical movement that took The Left out of the game for 20 years during the 1980's and 1990s as trendy Pomo Theorists announced a revolution "at a distance of several centuries"--if I am quoting Derrida correctly--rather than doing anything so soiling as leaving their arm-chairs and organizing at street level (which of course the less hygienically concerned Right was happy to do).
So I'm glad to see its popularity finally beginning to fade. Furthermore, I suspect that it is more prevalent nowadays in the popular rather than the academic literature, where it has been superseded by equally stupid Frenchy concepts rather than the good, Anglo/German, hardcore analytic stuff.
Word up: the French make good wine and great novelists. Their philosophers have sucked since Bergson.
And just to add a bit o' scholarliness here. One of the preliminary results of analysing the database has been the conclusion that (sorry, I can't find the link) Freud is more deeply embedded in world culture than Darwin...