After spending more than 14 years among the country's top selling albums, Pink Floyd's "Dark Side Of The Moon" finally dropped off the Billboard 200 album chart on October 8, 1988. The LP, which features tracks like "Money" and "Us and Them," was originally released in 1973 and has sold 45 million copies since then. All told, "Dark Side Of The Moon" spent a record 741 weeks on the Billboard 200 chart.