Wouter Vervloet posted a new plugin to the forums this week for ExpressionEngine 2: Timetravel. It “makes navigating through entries by day, month or year a breeze. It behaves similar to the default pagination, except that it uses dates in the URL instead of page numbers.”
Timetravel lets you flip through site content by date and appends the month, day and year to the URL. Wouter has a nice write-up on the forums with some example code or you can jump right to GitHub and download the plugin for yourself.