Sounds like you could store several full-length movies on your iPod along with your music.
Heck, you already can... I think I have about 1200 songs, 15-16 movies, Firefly, the entire first season of Doctor Who, and 3 dozen music videos on my iPod, and It still only takes up about 14-15 gigs of space (half of my ipod, and either 1/5 or 1/10 of the iPod classic depending on the size). My only problem is, while it’s amazing for road trips, train rides, etc., the battery only lasts for about 5 hours of video.