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11. The Best Of Both Worlds (with R. Kelly) (2002): Considering that both Jay and Kelly were titans in their fields and arguably peaking around the time they released this one, it should've been a huge deal. It wasn't, mostly because its two makers evidently treated it as a partytime lark rather than a fully formed statement. The songs on Best Of Both Worlds mostly follow the formula of the mega-successful "Fiesta" remix that probably serves as the reason the album exists: slick and bumpy music, with lyrics about partying and being the flyest person in the room. But even though it's a decidedly minor effort for everyone involved, it works, entirely on the strength of Jay and Kelly's mega-watt charisma. Even the slightest throwaways here come loaded with slinky melodies and smart lyrics turns of phrase, and that's good enough.