No.5 - Going overboard on Oprah

Not a big-screen moment, but one that'll be forever associated with Cruise and coined the phrase 'jumping the couch', after he made quite a big deal of declaring his love for new girlfriend Katie Holmes while appearing on The Oprah Winfrey Show. The incident caused a sizeable dent in his popularity.

Click here to see #4 in our video countdown of the greatest Tom Cruise moments