There are many, but the one represented here, "If I would have gone over there, I'd have been killed, or I'd have killed, or I'd kill all the hippies in the foxholes … I would have killed everybody," from the mouth of the immortal Ted Nugent (thanks, Omar, for the link in the recap), is high on my list.
There's also an erroneous use of relative clauses that makes my skin crawl whenever I encounter it. My aversion is so extreme that I construct an example with great difficulty--my brain flinches at re-creating the travesty--but it's something like, "I went to the store, which I didn't want to do it."
