Many have already heard about this deal, but it's worth promoting: With your Kroger card, you can purchase at Kroger one ticket to the zoo and get another one free. The deal ends August 22, 2010, but the tickets can be used anytime between now and the end of 2010. If you plan to visit the zoo more than a couple times, the best way to get in is to buy a membership.
But, for those who only go occasionally, the BOGO deal offers admission at a reasonable price. And, hopefully you can catch a ride in with someone who can get you free parking!
Chimpanzee photo is of baby George at the Knoxville Zoo.