The good news is, John Cook Kevin C. from Skeptical Science has created a nice, short video showing just why this claim is such a whopper.
I like this: clear, to the point, and easy to understand. The bottom line is that temperatures continue to rise, and that human-caused greenhouse gas forcing of the climate has not even slowed, let alone stopped.
I'll note that climate change deniers are still going on about climate scientists manipulating data. They're even trying to cast doubt on the measurements showing 2012 is the hottest year on record in the US! Which it was. The irony is rich; it's a common tactic for deniers to accuse actual scientists of the very tactics the denialists use. It's a level of chutzpah so high that even Yiddish can't do it justice.
You want to hear about real manipulation? Media Matters reports that for the past four years, not once was a scientist on a Sunday morning news show to talk climate change. Those discussions were dominated by politicians or a media people. Sauce for the goose: Media Matters found that every politician interviewed was a Republican. And since I'm at it, please, don't bother with false equivalencies.
Phil Plait, the creator of Slate's Bad Astronomy blog, is an astronomer, lecturer, and author. After 10 years working on Hubble Space Telescope data and six more working on astronomy education, he struck out on his own as a writer.