When I get my 27" iMac in January, I want to be able to listen to some tunes, take pictures, make videos ect. Will the iPod be a good choice as a camera..? I'm not a pro photographer but I want to take casual photos, such as on vacation or when something funny happens. It will be my first apple purchase along side the iMac, and I want to be able to enjoy it as much as possible. Also, do you think I require a case? Thanks!