At the moment you can only do this via iTunes on your computer. When iCloud and Ios5 op system are released in the Autumn you will be able to sync between your devices without the need of a computer
yep,you can,and this site will show you how to do it step by step. Media URL: http://www.ipad-video.biz/guides/sync-itouch-videos-to-ipad.html Description:
To sync iPhone to iPad, you need an iphone transfer software to sync files from iPone to computer, and then sync exported files from computer to iPad with iTunes.
Yes, you can use iPhone Wifi Transfer which can connect iPhone and iPad via WiFi. It also can share files between iPhone and iPad, or between other devices.