Well, THIS has never happened on American Idol! Tonight's X Factor (baseball weather permitting) brings the top 32 acts to the judges' homes, where they'll be coached by their new mentors and special guests (like Rihanna, pictured). As you daydream about what treasures Steven Tyler and J. Lo are hiding at their top secret, no-contestants-allowed mansions, click through for a closer look at the differences between two competitive singing series...that honestly seem pretty much the same.