I got an 8GB iPod Touch over the weekend... just wanted to say it's REALLY great. Best iPod ever by far. I'd say the only potential downside is the smaller space compared to the iPod classic... personally I don't have a problem with the amount of space. I currently have my entire mp3 collection and 3 full length movies loaded onto it and have not run out of space.
Anyone who hasn't checked this latest iPod out should watch the demo video seen here:
http://www.apple.com/ipodtouch/guidedtour/