If you haven’t yet, I encourage you to sign the petitions sponsored by the NAACP and Amnesty International, or make some phone calls.
The following summary of folks to contact comes from s.e. smith at Tiger Beatdown:
Both the NAACP and Amnesty International have petitions for clemency up. The petitions request that District Attorney Larry Chisholm (Telephone: 912-652-7308 Fax: 912-652-7328) withdraw the death warrant against Troy Davis. It is important to be aware that this alone will not halt the execution; Judge Penny Freeseman (912-652-7252) would need to approve it. You can also contact the Board of Pardons and Paroles (firstname.lastname@example.org, phone 404-656-5651, fax 404-651-8502) to request that they reconsider their decision. (Please note that the Governor of Georgia does not have the power to grant clemency in this case.) As always, keep contact short and sweet, and be patient if you get busy phone lines.
ETA: The ACLU also notes that the prison contracts out its medical services to CorrectHealth: call and ask for a general strike of all execution personnel at Phone: 770-692-4750; Fax: 770-692-4754.