What is the worst viral video attempt of all time?

I have seen a lot of terrible attempts of viral videos posted on YouTube by companies with marketing budgets big enough to feed an army. Amongst the painful memories one particular attempt stands out in my mind; The Sony "All I want for Christmas is a PSP" campaign. For some reaon this one has been burned into my mind.

Sony wanted to capture consumer evangelists expressing how all they wanted for Christmas was a PSP through videos on YouTube. Sony essentiall hired a bunch of actors to pretend like they were true consumers that would appeal to an attractive PSP market and man did it blow up in their face! This movie is literally one of the most pathetic things I have ever seen, I got a little sick half way through so I had to take a break.

What is the worst viral video campaign attempt you have ever seen? Can anything get worse than this?