I want to make a tv streaming site. How can I group categories by genre? like some categories may appear in multiple genres so I don't think making child categories isn't going to work. So how can I do this?
Using tags isn't going to work cause I'll be using posts as episodes. This is the structure: Charmed (Category) - Episode 01 (Post) - Episode 02 (Post) - Episode 03 (Post) Categories will be used as Series so I want to be able to group categories by genre. Any solution?
Woothemes has a theme called Wootube which should be able to organize your categories and videos the way that you want them displayed. You should check to see if some sites are offering a free download of that theme or consider buying it.
I found a plugin called JQuery Categories List Widget. Maybe this will be able to work if you want the categories displayed on your sidebar http://wordpress.org/extend/plugins/jquery-categories-list/screenshots/ .
That plugin doesn't group categories by genre's... all that does is display all categories/sub catergories