or a great piece of bar art! something funky and abstract if that's your style! It could be a big funky martini glass painting or something along those lines. Or a cool clock of some kind....in regards to happy hour! Even if it's not a working clock and stuck on 5 o'clock!
Metal wall sculpture?

Or how about a sign that says "It's 12 o'clock somerwhere"?

You could have a counter top that flips from a wooden bracing on the wall. It's what they have on the popular British soap, 'Coronation Street' (in the Rover's Return Pub.) They flip it up to get out, or keep it down for surface area.
You can see the wooden counter in the up position, behind the blond barmaid - who turned out to be Leanne's mother, but that's part of the Corrie folklore.

I agree with some art or doing a funky tile on that wall.

Great ideas however we don't drink but I still want it sleek and sexy. Lol. How do you think a mirror would look since the cabinets will be mirrored?

http://www.element-designs.com/catalog/eluma-led-shelving/.
If it is not too late for additional electrical, consider illuminated shelving for bar ware such as that offered by Element Designs - see link above.

@pmjames,
No additional mirrors, how about a three dimensional piece of art that helps balance the mass?

A big, leafy tree that has strings of indoor lights to give it that indoor/outdoor cafe/bistro/swingin' hot spot sort of feel!

JMHO