Penny Marshall already had a successful TV acting career when she set out to become a director.

Pop culture can be brutal to yesterday’s stars, but Andy Williams never seemed to fade away. Long after many of his contemporaries slipped from the spotlight, his voice was still showing up on television screens and holiday playlists. From "Moon River" to Christmas classics, Williams had a knack for staying relevant without ever changing who he was.

Some of Hollywood's biggest stars have admitted they were confused by the role, puzzled by the script, or still trying to make sense of the story long after filming began. Here are some famous actors who admitted they never fully understood their most iconic rolls.

25 unforgettable 1960s TV catchphrases that baby boomers still remember, including their origins, shows, and why they became iconic parts of pop culture.

Most people spend their later years taking it easy. Dick Van Dyke somehow became one of the most energetic 100-year-olds on the planet and still seems to be having more fun than people half his age. Naturally, everyone keeps asking the same question: What's his secret?

For millions of Baby Boomer men, these women were impossible to miss. They starred in the biggest movies, appeared in the most popular television shows, and seemed to be on every magazine cover in America. Some became household names. Others became full-blown cultural phenomena. But as crazy as it sounds, many Millennial men today wouldn't recognize these talented and beautiful actresses by face or by name. Do you?