an alternative
I've looked at the 2G's at the apple store, and I wasn't impressed with the speaker when playing video..I couldn't even hear it all the way up after I had the store kill the musak!
I did some research, and found what appears to be a good, slim ultra thin speaker that attaches using the dock connector. It's being shipped from Hong Kong, and I expect it within a week or two. I'll let you know how it works.