The Big 29: Net Worth

This week's most intriguing people under 30:

1. America Ferrera (22), actress
2. Beyonce Knowles (25), musician/actress
3. Roger Federer (25), tennis player
4. Steve Chen and Chad Hurley (28, 29), YouTube founders
5. Shaun White (20), snowboarder/skateboarder
6. Scarlett Johansson (22), actress
7. Danica Patrick (24), Indy Racing driver
8. Maria Sharapova (19), tennis player
9. Mark Zuckerberg (22), Facebook founder
10. Jennifer Hudson (25), actress/singer
11. LeBron James (22), NBA forward
12. Emily Blunt (23), actress
13. Ryan Gosling (26), actor
14. Ludacris (29), musician/actor
15. Shakira (29), musician
16. Serena Williams (25), tennis player
17. Kevin Rose (27), Digg founder
18. Justin Timberlake (25), musician/actor
19. B.J. Novak (27), writer/producer/actor
20. Maggie Gyllenhaal (29), actress
21. Michelle Wie (17), golfer
22. Sidney Crosby (19), NHL center
23. Brian Urlacher (28), NFL linebacker
24. Kal Penn (29), actor
25. Carrie Underwood (23), musician
26. Kirsten Dunst (24), actress
27. Jake Gyllenhaal (26), actor
28. Ivanka Trump (25), business executive
29. Evangeline Lilly (27), actress

Newbies: tennis' big racket, Oscar-nominated teacher, tennis' big bounceback, cool-as-ice center
Out: Saint Bush, Idol rocker, hip-hop 'go-getta', Napster boy