According to this BBC article some swine flu victims have shown “zombism” type behaviors post-mortem. From the article:

After death, this virus is able to restart the heart of it’s victim for up to two hours after the initial demise of the person where the individual behaves in extremely violent ways from what is believe to be a combination of brain damage and a chemical released into blood during “resurrection.

I particularly like the 4th bullet under the “Symptoms – what to do” section:

If you feel yourself passing away, then notice your strength and vigor returning at an alarming rate, please attempt to restrain yourself to prevent infection and harm to others.

Remember, if you are going to turn into a zombie – do try to restrain yourself.

btw folks – this is silliness