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    Justin Timberlake

    Non-music ventures: Investment in MySpace; partial ownership of Memphis Grizzlies; restaurants (Chi in West Hollywood; Destino and Southern Hospitality in New York); William Rast clothing; acting career Approximate Net Worth: $100 million

    Though Justin Timberlake has spent noticeably less time on music (or, at least, releasing and performing music) as his career has progressed, he's certainly managed to find ways to keep himself busy. An owner of three restaurants (with his first, Chi, opening in 2003), founder of a clothing company with partner Juan Ayala, holder of a minority stake in the NBA's Memphis Grizzlies with wife Jessica Biel, and, most recently, investor in the newly revamped MySpace, Timberlake has quietly built a portfolio to rival that of any musician-turned-mogul.