Nearly 60 years after it last aired, I Love Lucy is still a fixture on TV. In fact, the sitcom still attracts 40 million annual viewers to this day, thanks to its regular re-runs. It even spawned its own stage show at Los Angeles’ Greenway Court Theater for a three-month run in 2011. But behind the laughs lie some incredible secrets that you never knew – from the real-life dramas and fights between the cast, to the incredible clause that William Frawley had written into his contract. So sit back as we reveal 40 little-known facts that every I Love Lucy fan should know.