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).
& Jennifer Lopez GIGLIMatthew McConaughey
& Penélope Cruz SAHARATom Cruise
& Nicole Kidman EYES WIDE SHUT
Vince Vaughn & Jennifer Aniston THE BREAK-UPBrad Pitt
& Angelina Jolie MR. & MRS. SMITH