A TV in every booth would be a good theme for a restaurant. However, this theme may not be profitable to the business. You may consider a different lighting scheme or color scheme. Make sure that the color and the lighting provide a relaxing atmosphere in the restaurant. Find more information at http://restaurants.about.com/od/decidingontheconcept/tp/Concepttips.htm.
One of my more eccentric ideas would be to have a restaurant underwater. Or in one of those kind of tunnel things that they have in aquariums where you can see fish going on the sides and on top. That would be really cool, but expensive.
Another idea would be to have a restaurant that served it's meals in beds. Imagine, tons of beds just lined up with people eating them. You might have to wash a lot of sheets, but the idea itself is pretty cool, and you could do a lot of different things with it (pillow fights?).
I hope this helps, but sorry if it wasn't what you were looking for! :D