seeing stripes

the empty wall behind my tv in my living room has been bothering me.  You know, the only major wall in the entertaining areas of my condo that isn't broken up by a door, window, or something of the like.  I would love to have a gallery wall to the right of the tv or art on either side, but I'm holding off for now. 
(of course that's my Skins losing to the rams today)
I'm thinking I should paint stripes on it.  The major question would then be,  horizontal or vertical?  Thick or thin?

Vertical stripes would make the place appear taller, and 80% of the time I think they're the way to go, but every now and then I see a picture like these and change my mind

what do you think?  (and who wants to come over and help me do it!?)