I picked up a DLO Jam Jacket the other day. It's all rubbery and great for people like me who drop things. Link below says iPhone but fits perfectly for the touch. I'm very satisfied.
When looking for features, I wanted one that would allow full access to the docking port. I don't have a dock yet, but based on the design, I don't see much of a compatibility problem.
I have several. Two sylicone cases, one clear and one black from eforcity.com. A Griffin flip case form Target. A Griffin clear plastic case from Target, and a brown leather Belkin slip case, also from Target.
I have a leather case I got off ebay. Its very much like the case I have for my palm (which I have retired as my touch is now my PDA) it has room to carry a couple of credit cards
i have one that covers all the body of my precious ipod touch, for when i have to take it out with me, almost never, i have a clear case, and now i have the INVISIBLEshield, i wanted to put it back in the clear case but it didn't fit with the shield on..
i picked up DLO jam jacket cause i couldn't find the incase silicon cover in my country. honestly, i can't see myself without the earphone holder from the jam jacket after months of usage. though the DLO silicon cover is a bit loose.