Actually, you don't have to jailbreak for access to the file system any longer, but You do have to use a separate app... which is still ultra-BS in my book. Behold, PhoneView. Access to the entire iPhone/iPod Touch filesystem.
They're maemo and MeeGo... "Meamo!" sounds like what Zorro would say to catherine zeta jones... after she slaps him for looking at her dirtily...