Whether this is a photoshop gag or not, I think most of us know the answer to that question.
"Folks in Minnesota on their way to work Tuesday morning looked up to find a familiar face staring down at them: former President George W. Bush. A billboard with the words "Miss Me Yet?" is causing a stir around the blogosphere, with some claiming it's fake and others curious to know who put it up. The buzz started after Minnesota NPR's Bob Collins blogged that he had seen it in person as he drove on Interstate 35 near Wyoming, Minn. Pretty soon news stations were clamoring to get an interview with him (though all he did was see something). After pictures of the billboard were posted, many people are claiming it's just another Photoshop hoax even though Collins says it's real."
I concur with the following words as boldly stated in the article: Do you really want us to answer that, Mr. President?