The Awl reports that of "44 films in 2009 that topped the box office for at least one weekend, an Apple logo or device could be seen in at least 18 of them. (That's almost 41%.)" And note, this was un-paid space, ie no paid product placement.
The list includes:
Drag Me to Hell, Orphan, I Love You, Man, Duplicity, Crank 2: High Voltage, Ghosts of Girlfriends Past, Imagine That, Sorority Row, Answer Man, Post Grad, I Love You Beth Cooper, All About Steve, Hurt Locker, New York, I Love You, It’s Complicated, Road Trip: Beer Pong, Law Abiding Citizen, Fantastic Mr. Fox, Funny People and Couples Retreat.
Apple's Greatest Cinematic Achievements from The Awl on Vimeo.
The Awl continues: "Apple’s product placement pace will remain strong in 2010, with Apple placements already confirmed in the films Book of Eli, When in Rome, Kick Ass, Chloe, The Killers, Wall Street 2, City Island, She’s Out of My League, The Joneses, The Spy Next Door, Percy Jackson: Lightning Thief, Valentine’s Day, The Bounty Hunter and Toy Story 3.o