The Shriek Theater movies are once a month, they are gunna be showing Brain Damage next. I'm not sure if a date is set yet for that event. There is this Gorehound Guide to Atlanta that lists all the "horror events" that are going on each month.
I've been to the Star Bar in L5P a few times, for their X-Mas shows. I don't believe I have been in the Yacht Club, but I've been up and down Little 5 so I'm sure I stumbled in at least once. Never been to the Atkins Bar...
I really wanted to go see Suspiria this Tuesday at the Plaza since they are showing the 35mm print, not just a DVD. I gotta work so I won't be there but I will probably be showing up for the next Plaza event: