96. Lady Gaga, 'Poker Face'
Let's (poker) face it — any decade that ends by making a star out of a screwed-up Italian girl like Stefani Germanotta can't be all bad. This hit defined her style of cool — both an art freak and a mainstream prom fave, singing about crushing out on another woman while she's in bed with a man. Will Gaga still be riding the fame monster this time next decade? Any fool who bets against her obviously can't read her poker face.