GEORGE CLOONEY
NEW YORK CITY
The Oscar winner—and his grin—got to work Feb. 15 on the set of Michael Clayton, a thriller about a lawyer who must face up to his clients' misdeeds.

RENEE ZELLWEGER
LONDON
So what would Peter Rabbit download? Playing early-20th-century children's book author Beatrix Potter in the bio Miss Potter, Zellweger relaxed with a 21st-century icon—her iPod—between takes March 7.

CATHERINE ZETA-JONES & AARON ECKHART
NEW YORK CITY
Despite teeth-numbing temps below 30°, the pair (with Abigail Breslin, behind Eckhart) cycled for their as-yet-untitled romance Feb. 27. "Between shots everyone ran back to their trailers to stay warm," says an on-set source.

HALLE BERRY & BRUCE WILLIS
NEW YORK CITY
Willis got a firm grip on Berry when the two filmed a scene Feb. 15 for their upcoming psychological thriller Perfect Stranger, in which Berry's character goes undercover online to try to catch her friend's murderer.

ADAM SANDLER
NEW YORK CITY
Sporting a shaggy new look, Sandler (on March 7) zoomed around the set of his new drama Empty City. "He looked like he wanted to take that scooter home," says an observer.