With that leaked ROM for the upcoming T-Mobile HD2 for the U.S. market comes a new version of TouchFLO 2.5 (aka Manila).
One of those features is a new "documents tab" which evidently lets your browse through your \My Documents folder right in TouchFLO.
Goes to see HTC is not resting on expanding the reach and depth of Manila. We suppose you can look forward this enhancement from your local chef in a short bit.
Edit: Ignore the WM6.5.x in the pic--part of a custom ROM, not HD2 which is WM6.5.