To me all the evidence that I need for peak oil comes from the production numbers for the lower 48 US states. There it is, in pure numerical glory, hard data, showing a clear peak and decline. People will claim in perpetuity that this doesn't apply to the world as a whole, for reason that they can never quite quantify.

I now refer to peak oil naysayers as "earth with a creamy oil center theorists." Mmmm, creamy oil center....

you are the media you consume.