I'm a week or so late to this party, so apologies.  Oddysey posted about this last Thursday, not only propagating the phrase in question but introducing me to two great webcomics as well.

"Do you read Darths & Droids? Imagine DM of the Rings, Star Wars style, except that the game master in question isn't nearly as much of a jerk.  It's also responsible for the phrase, "Jar Jar, you're a genius," existing on the internet."  (Oddysey)

The phrase jumped to the top 40 on Google Trends almost immediately, mostly due to spam bots, but this has entertained the makers of Darths & Droids enough that they're asking the general public to "sustain and propagate this insanity. So if you haven't done it yet, go to Google and search for "Jar Jar, you're a genius" (with the quotes). Mention the phenomenon in your blog and encourage other people to Google for the term. Make posters proclaiming Jar Jar's genius and stick them up all over town. (If anyone actually does this, send us photos and we'll show them off!)"

Much love for Oddysey for introducing me to this webcomic.