The actor dons his hard hat for a tour of his eco-friendly housing project in New Orleans. Plus: Hayden Panettiere, Joel Madden and more

2 of 16

HERO WORSHIP

Hayden Panettiere, who turns 18 Tuesday, sparkles as she receives a bouquet from admirers Monday outside the Late Show studio in New York, where she stopped by to chat about the upcoming second season of Heroes.