Everyone has their 15 minutes of fame, but not everyone chooses to spend it naked. Luckily, those who like their celebrities bare, there's people like Levi Johnston, who is boldly capitalizing on his fame by posing for 'Playgirl'. This is nothing new, of course, as celebrities big and small have been showing pretty much everything to 'Playboy' for decades. But, just in case you've forgotten any of them, after the jump we show you some of the greatest forgotten Playboy spreads (don't worry, it's SFW).