Windows 8 Media Browser Windows 8

Hello everyone,

it is my first post here, my sentence may sound weird.

I'm looking for a Media Browser for my Movies/tvShows, I have a lot of movies and tvshows and simply use the explorer to go through my files, but i like clean/good looking stuff. I imported picture of the show/movie in my folder so that you can see the picture before opening the folder.
To make it clear, it could be a Windows 8 App ( because i really like them) but it would be nice if its not laggy.
I dont really want to acces it on the web so that i can Stream on others computer.

thanks everyone for your help and sorry again for my text form.

Fabrice