I am looking to spruce up the patio and I like the idea of a little privacy with the advantage of some extra seating.

Build Yourself a Privacy Planter, 2 different styles. – Free Plans
http://www.thisoldhouse.com/toh/how-to/overview/0,,20606886,00.html
I love this one from This old house for the rollers on the bottom and the look of it.
But I like the closed seating part on this one from Lifestyle-landscapes for my patio. I think I will use the plans from This old house but modify to add the seats and leave off the flower boxes on top from the Lifestyle- landscapes one. I also think I will set containers behind the trellis and plant honeysuckle in them. Can you imagine how wonderful it would be to sit there surrounded by the scent of honeysuckle? Mmm bliss.
http://lifestyle-landscapes.com/