Not sure what your budget is, but how about a long modern tapestry? A beautiful mobile would look great too.

Thanks all. Some good stuff at Joss and Main. Will need to figure out what to put above the TV.

That entire wall behind the TV seems to be ideal for a photowall. So a photo printed as wallpaper. Did a quick google search and this company has some great ideas: http://rebelwalls.com/

If you're renting, a wall decal or removable wallpaper could be a good option.
http://wallsneedlove.com/pages/wallpaper-murals

Hi Austin,
Many of our customers find that our banners work well in tall spaces like this. A little more about us below. Congrats on your new(ish) space!

We at BetterWall represent 30 art museums selling their authentic street banners to people to put in their homes and offices as spectacular wall art. As unique objects produced in limited editions, the banners embody great art, great museums, and contemporary advertising trends.

Priced between $300 - $800.
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You could put something sculptural up on top of the closet, like large baskets or colorful vases -- anything that catches your fancy. Would wait until the right thing presents itself!

@Carolins, we agree. That wall behind the TV is perfect for a wall mural or photo gallery. Check out our examples, maybe some of them will inspire you:

Hi there, Feel free to browse our online gallery www.jameshoustondesign.com of Limited Edition images captured by world-renown photographer, James Houston.