I got an extra 60GB iPod that you need to buy. Now go bid on it, you know you want it. It's all brand new and shrink wrapped.
Vani found these cool looking cases. The display doesn't (visibly) scratch, but the rest of it gets to look pretty battered a little too fast.
Apple puts some sort of dinky pseudo-case in the package. It's better than nothing, but to use the iPod - or even just to charge or sync it - you have to take it out. Not useful.
In other words, there's a reason a billion companies make cases. Get one for your new iPod.