“A perfect storm” (ridiculous cable news addiction)
“Due diligence” (are we a nation of accountants?)
“24/7” (Lose this fast!)
“Worldclass” (puleeze!)
“We’re on it.” (of course you are)
“Well, good for you!” (said about anything – this is a mindless phrase!)
“I’m all about ——-” (lazy use of the English language)
“Have a good one!” (I loathe this one – lazy beyond belief)
“It’s all good.” (mindless pothead jargon)
“Totally!” (on the other hand, I can’t live without “Whatever!,” said ironically.)

That’s my short list. Have I missed any?