The Daily Show made great work last week out of our tendency to confuse short-term fluctuations with long-term trends, shining a particularly bright spotlight on the it's-cold-outside-so-global-warming-isn't-real crowd. I found the clip so effective, I downloaded it, and tucked it safely away in my vault.
BTW: xkcd on the same issue.
BTW: Not for nothing, this is exactly how my mind worked. When I was ten.