Careful with that though, although it fits, its "balancing" on the dock connector... you're going to ware out the connection. That why they have different docks for different ipods iphones etc..
My ex-iPod Touch didn't fit into my GF's iPhone 2G's dock - so like VertigoZA said, buy the dock for yar device - just a shame there's Apple tax on everything - i.e. double the price it should be...