You can change the titles and dates of any of your movies online.  

Note: If you order a DVD from an album for which you changed the title, DVD copies will *not* include the updated title. However, custom DVDs you create in "My Custom DVDs" will reflect the title from the Custom DVD creator.

From All My Movies place your cursor over the movie and then click the title.  
 

Update the title and date, then click the checkmark icon to accept the changes (or the X icon to cancel).
 

On the viewer page, you can change the title or add a description to a chapter by clicking on the pencil icon next to the chapter name or "Add a short description to this chapter."  Note, the title and description will be visible to any person with whom you share the album.