Check out this great viral marketing campaign from Pepsi for Pepsi Max.

A customised Flash video is generated from the information you provide about a friend taken from a limited list of dropdown choices.

Definitely targeted at the young male market (which pretty much counts me out!!) Pepsi have a young woman creating a video blog about the mystery date she met last night describing him in a fairly humorous way to you the viewer. The best bit, though, is that you can upload a piccy of your mate that is superimposed onto the young woman's mobile.

This all gets emailed to the friend in question and if you are a guy you would be hard pushed not to be tempted to do the same to another mate - the perfect viral campaign.