Some people think that Gingrich played a major role
in rallying conservative opposition among House Republicans to the $700 billion bailout, and did so knowing it would be deeply embarrassing to John McCain and hurt his campaign. He's perhaps one of those conservatives who'd rather lose in 2008 and have the GOP run in 2012 with a "real" conservative, perhaps himself...
Oh, and during the 1990's he was one of the Republican congressional leaders who was obsessed with Bill Clinton's penis and its extracurricular activities.