Through the jump list of the application you opened that document in recently? Obviously this requires you to know both what you opened it in and have it pinned to your taskbar, but I really like that feature for reopening files I recently closed on a per app basis.
Ah jump lists. I used Win7 since it came out and never found those. Only discovered them since I've been on Win8 through some random mention and a video. They aren't intuitive or very we'll known. People at work now see me use them and every time are surprised and ask me how I did that.
