Q: Movie sharing

Her iPad would need to be signed in with your Apple ID. You can do this by going to Settings> iTunes & App Stores

You can log into your account on your wife's iPad (tap on her id in Settings > iTunes & App Store to log out of it) and you can then redownload your films on her iPad - but redownloading an account's purchases may tie her iPad to your account for 90 days : http://support.apple.com/kb/HT4627 (so she won't be able to use iTunes Match, automatic downloads, or redownload her own past purchases until the 90 days have completed).

Or copy the films to the computer's iTunes that she syncs to (you can authorise your account on it via the Store > Authorise This Computer menu option) via File > Add To Library and she can then sync them. By default your iTunes library is stored on your computer under :

• Mac OS X: /Users/username/Music
• Windows XP: \Documents and Settings\username\My Documents\My Music\
• Windows Vista: \Users\username\Music\iTunes
• Windows 7 and Windows 8: \Users\username\My Music\iTunes

So your films should be in a Movies directory/folder under that.

If you don't have the films on your own computer then redownload them on that (via the Purchased link under Quicklinks on the right-hand side of the iTunes store homepage, assuming that you are in a country where films can be redownloaded) and then copy them to her computer - logging into your account on her computer and redownloading them might tie her computer to your account for 90 days.

I always download my movies to iTunes (computer) and then sync to all my other devices (must use same Apple ID)