Tim is working hard on putting together guides for all the different climbing areas in and around Athens, but after looking through the old post I realized there aren't any directions listed to get you to the bouldering in the first place, so I thought I would give some to get the folks from out of (and in) town started
Driving directions- To access the bulk of Athens climbing there is an excellent trail network. If it's your first time coming in to town, I suggest you start with the COAD/Trailer Park Areas. The trail head for these areas is located on East State Street. If coming taking 33 East or West, follow the signs towards the State street exit. Once you reach East State Street, turn East towards Apple Bees, you should pass it on your right. Continue following East State past a few car dealerships, shops, and restaurants (a few should be familiar from Dylan's post). After passing through a few lights you will come to an intersection with Walmart and Burger King on your right, and The Ohio University Credit Union on your left. From here you will turn left down a small street which I can't find the name of. The Credit Union should now be on your right, and a small trailer park on your left. Park at the end of the road at the big blue and white barn. The obvious trail in to the woods is called the Cucumber trail.
Directions to the boulders- Follow the cucumber trail in to the woods. Please stay on the main trail not only because it is good ethics, but because this trail is on privately owned land, and we don't want to lose access! Follow this trail until you reach a wooden foot bridge on your left. To access COAD and the emerald boulder cross the footbridge and follow the trail left. To access the trailer park boulders pass the bridge and continue on. Along this trail you will pass the commitment area, the ravine area, the font area, the spirit area, and tons of other established problems.
Definitive guides coming soon, stay tuned...
Here is a map of the Athens trail network on which I marked the bouldering parking in red, along with a couple of the more condensed areas. Hope this helps!