The 71-year-old actor is a double Academy Award winner with a string of iconic roles in movies including "Wall Street" and "Fatal Attraction" under his belt, but he says nothing can top the moment he met his spouse, reported People magazine.
"Right now, it would probably be the Deauville Film Festival in 1999 when I met Catherine," he replied when asked about his career highlight.
"That was the best memory I got," he added.
The star married the Welsh actress a year later in November, 2000 and they quickly became parents to son Dylan, 15, and Carys, 12.
"They're teenagers, so they think we're very dumb right now," she quipped.
The couple had witnessed a rough patch in their marriage but are happily back together.