The invention includes methods of forming a plurality of capacitors. In one implementation, a plurality of capacitor electrode openings is formed over a substrate. Individual of the capacitor electrode openings are bounded on a first pair of opposing sides by a first capacitor electrode-forming material at one elevation and on a second pair of opposing sides by a different second capacitor electrode-forming material at the one elevation. Individual capacitor electrodes are formed within individual of the capacitor electrode openings. The capacitor electrodes are incorporated into a plurality of capacitors. Other aspects and implementations are contemplated.