Celebrities love their watches – so much so that besides just wearing the hottest names, some have become ambassadors of particular watch brands and others have co-designed their own collections. And then there are movie-inspired pieces that either made their way onto the big screen or were specially designed to commemorate a blockbuster hit.

For the movie Iron Man, Bvlgari’s timepieces graced the wrist of Robert Downey Jr. (aka Tony Stark aka Iron Man) throughout the movie. The timepiece featured on the opposite page, Diagono Phase de Lune watch, was worn by Stark during the movie’s formal scenes. Downey, who was honored by Salon as the Sexiest Man Living, is seen throughout the movie wearing the watches on his right hand – does that mean Iron Man is left-handed?

From the Sexiest Man Living to the twice-named Sexiest Man Alive by People magazine, Brad Pitt (aka Mr. Angelina Jolie) recently teamed up with Damiani to produce not only a collection of watches, but a few accessories as well. The co-designed D-Side collection offers elegance, style and a classic look. Besides lending his good taste, the actor also lent Damiani his good looks, posing for a string of print and TV campaigns in Italy. Pitt and Damiani have agreed to a two-year contract intended to help the jeweler update its image and at the same time point out the role of men as prime purchasers of jewelry for women.

Another Sexiest Man Alive, Daniel Craig (aka the new James Bond) also debuted a new watch along with the film Quantum of Solace. The Omega Seamaster Planet Ocean 600m Quantum of Solace Limited Edition watch has all the features that have made the Seamaster Planet Ocean one of the world’s most-popular timepieces, and more. Unique details distinguishing it from other Bond watches include its black dial, with a textured surface reminiscent of the grip of Bond’s trademark gun; white Super-LumiNova on its indexes and hands, and the words Quantum of Solace laser-engraved discreetly on the inside of its sapphire crystal. Only 5,007 pieces have been released, and on the case back of each is the limited edition number (0000/5007).

Omega, also known for its many ambassadors including actors George Clooney and Nicole Kidman, recently added Zhang Ziyi to its team. Ziyi is an accomplished actress who has appeared in more than 16 movies, including Crouching Tiger, Hidden Dragon; House of Flying Daggers and Memoirs of a Geisha. The stunning spokeswoman will immediately make a number of promotional appearances on behalf of the brand.

Leading ladies also have taken a liking to Cartier. Hot celebs wearing the Cartier classic Tank watch are Ashley Judd, who has it in white gold with diamonds; Debra Messing, who owns it in yellow gold and Rosario Dawson, who has it in steel. Jennifer Garner wears the white gold Cartier Tank Americaine.