Wirelessly posted (Mozilla/5.0 (iPod; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)
Personally, I use the Griffen Survivor. It's not just a screen protector though, it's a whole case, and an awesome one at that. It has a wonderful design, with amazing military-grade performance/construction. I don't know if you would be interested though, if you're only looking for a screen protector. It is an amazing case though, and I would HIGHLY recommend it to anyone looking to buy, or that already owns an iPod Touch.