A really cool app that I find very usefull is called HandBrake. many of you have probably heard of it, but it is a program that rips DVD's onto your computer into MPEG4, also know as the file type that plays on iPods. I rip all my ski movies on every year, so i can watch them whenever in decent quality on my laptop, and also choose my favorites and watch them on my ipod. i recommend you check it out. heres a link:
http://handbrake.m0k.org/