Katie Holmes and Tom Cruise: Known as TomKat, the A-list hunk and the ex-Dawson's Creek star make up one of Hollywood's most-frequently photographed couples right behind Brangelina. Cruise -- the ex-husband of actresses Mimi Rodgers and Nicole Kidman -- began dating Holmes in 2005, proposed to her atop the Eiffel Tower, jumped on Oprah's couch in delight and fathered a daughter, Suri, with her, all in just over a year's time. Only in Hollywood.