Q: why cant i put movies on my ipod?

I'm assuming that you have tried putting the movie in iTunes and syncing, the only other way is to enabe to ipod for disk use, then put the movie in the file. i've not tried this so i'm not aware of what this can do or if it works.

Hope this helps

See:

iTunes: May be unable to transfer videos to iPhone, iPad, or iPod

iTunes: Frequently asked questions about viewing and syncing videos