It's pretty unfortunate to score an own goal. Of course, crosses will always get deflected, headers will always go awry and kicks will always be mistimed, but you have to be very unlucky to hit the back of your own net.
Everybody remembers Peter Enckelman and Olof Mellberg's impression of the Chuckle Brothers for Aston Villa. Jonathon Woodgate's infamous debut for Real Madrid earned him both an own goal and a red card for his troubles. And Tony Popovic retired in the knowledge that he managed to score one of the most beautiful own goals of all time.
But scoring in your own net once isn't always enough for some players. Jonathan Walters proved that against Chelsea with his name on the score sheet twice for the Blues, and to cap it off, he completely missed the opportunity to score in the right net when his penalty hit row X of the stand behind the goal (via BBC).
But surprisingly, there have actually been performances worse than the one showcased by Mr. Walters. So Jon, when you cower behind the sofa watching the match highlights tonight, at least you can think to yourself, "At least I'm not one of these guys."