Creative Vision M Zen Video 30GB Hi-Grade Leather Case w/ Video Viewing Kickstand Belt Clip - Available in Black/Baby Blue/Green/ Pink (Black)
I really like this case because it's easy to maneuver the mp3 players and it absorbs drops very well.  The one thing that's missing is you don't have access to the reset pin hole, but that might be by design as to block dirt and loose debris.