By Jason Lynch Maureen Harrington Leah Rozen
June 12, 2006 12:00 PM

Real-life couples sometimes fizzle onscreen, but Vaughn and Aniston generate plenty of sparks. Here’s how they compare to other matchups, from lukewarm (left) to smoking (right).

Ben Affleck & Jennifer Lopez GIGLI

Matthew McConaughey & Penélope Cruz SAHARA

Tom Cruise & Nicole Kidman EYES WIDE SHUT

Vince Vaughn & Jennifer Aniston THE BREAK-UP

Brad Pitt & Angelina Jolie MR. & MRS. SMITH

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