The folks at the excellent energy blog The Oil Drum are calling it: peak oil happened in mid-2008 at 81.73 million barrels per day. That means production is falling from here on out.There have been, and will continue to be, disagreements about the exact date, but The Oil Drum is no I Can Has Cheezburger-they're wonks and I'd trust them more than most media outlets on this issue.If you're not an expert but want to wade through the exhaustive (and exhausting) post that accompanies the chart, this glossary from the Energy Information Administration might come in handy.