For me it's not the oft-lamented "buzzwords" that drive me crazy (obnoxious words like "synergy" seem to have become so universally despised that I hear them less and less), it's the old faithfuls that are slowly eating my soul. Phrases like "let's hit the ground running" and "there are a bunch of moving parts" and "we've got to move the needle." This brand of vague, ambiguous corporate bullshit makes me roll my eyes so hard I'm temporarily blinded.