What can be done more with an old ipod touch(First generation)
Maybe not the best iOS device nowadays but it still makes a nifty remote!
I have an Ipod Touch (2nd gen though) that I use to control my mac-mini media center.
It's very intuitive to manage your playlist (iTunes DJ mode) with the Remote app.
And I use Mobile Mouse Pro to use my Ipod as a mouse. User experience  is not as sweet as Remote but still a great app which eliminates the need for keyboard.