Microsoft Zune 4GB / 8GB Leather Case with bonus screen protector belt clip
Purchased the Black Silicon Skin for Zune 30GB.  I have three cases for my Zune, and this one is by far the best.  Easy to put on/remove and has a very snug and accurate fit. Stand is remove able but is nice to have when watching movies.  Sturdy material makes for good protection, and the added screen protector is a nice bonus.  Buy this one, can't beat the price and most likely, you won't find it in stores.