The Act applies to all state and local "agencies" including all departments, agencies, boards, bureaus, commissions and authorities. O.C.G.A. § 50-14-1(a)(1). The Act also applies to any other entity serving a governmental purpose. See, e.g., Jersawitz v. Fortson., 213 Ga. App. 796, 446 S.E.2d 206 (1994) (Olympic Task Force Selection Committee subject to Act). The Act has been held not to apply to the Georgia General Assembly or its committees. See Coggin v. Davey, 233 Ga. 407, 211 S.E.2d 708 (1975).