In this paper, we present the intelligent multimedia data hiding techniques and their possible applications. An introduction on intelligent multimedia data hiding is described which covers backgrounds, recent advances, methodologies, and implementations. The recently developed research branch called reversible data hiding is also depicted. Two major classes for the implementation of reversible data hiding, namely, the difference expansion method, and the histogram-based scheme, are discussed. With its ease of implementation, the histogram-based reversible data hiding technique is then illustrated with simulation results and actual implementations. Possible extension for our work is also depicted in the concluding remarks.