Georgia Wiretapping Law
Georgia's wiretapping law is a "one-party consent" law for purposes of making audio recordings of conversations. Georgia makes it a crime to secretly record a phone call or in-person conversation "originat[ing] in any private place" unless one party to the conversation consents. See Ga. Code §§ 16-11-62(1), 16-11-66 (link is to the entire code; you need to click through to Title 16, Chapter 11, Article 3, Part I, and then choose the specific provisions). Therefore, you may record a conversation or phone call if you are a party to the conversation or you get permission from one party to the conversation in advance. That said, if you intend to record conversations involving people located in more than one state, you should play it safe and get the consent of all parties.
In addition, Georgia has a special provision regarding the use of a hidden video camera. The law makes it a crime to use a device to "observe, photograph, or record the activities of another which occur in any private place and out of the public view" unless the person making the recording gets the consent of all the persons observed. Ga. Code § 16-11-62(2) (link is to the entire code; you need to click through to Title 16, Chapter 11, Article 3, Part I, and then choose the specific provision).
In addition to subjecting you to criminal prosecution, violating these provisions can expose you to a civil lawsuit for damages by an injured party.
Consult The Reporters Committee for Freedom of the Press's Can We Tape?: Georgia for more information on Georgia wiretapping law.