Not a real big fan of Old Navy since I guess I grew out of that phase... don't get me wrong they make respectable clothes but there are only so many ringer t-shirts one can wear in a lifetime.
I recommend the clearance rack strategically located in the back of the store sections. I guess it's pretty smart to put the regular priced stuff in front, but sometimes I feel the clearance prices are just about right for what you are getting.
Other than some novelty items and the occasional good sale, I think I'll stick with my other stores for the time being.