Forget Sarah Palin's Potemkin candidacy: it's John McCain who hasn't given a press conference,
or taken a question from a reporter, or so much as talked to a single voter in a public forum in over three weeks.
UPDATE: In the comments, Jeff points out the "interview" part of this post is actually one day out of date:
Yesterday in an interview with an NBC affiliate in Portland, ME, Sen. John McCain (R-AZ) was questioned about Gov. Sarah Palin’s (R-AK) national security experience. First, he tried changing the subject to the economy. When the reporter refused to let him slide away, McCain then offered platitudes about how Palin is “right” on every single issue while Sen. Barack Obama (D-IL) is “wrong.” Frustrated, the reporter again pressed him for a specific example. McCain simply replied, “Energy”.More on that one at Political Animal. As Jeff says, "Now you know why he hasn't been doing it much lately."