Drew Barrymore

Drew Barrymore has been making the talk show rounds for over three decades now, but one moment in particular, according to her, will always stand out above the rest; that time when she flashed acclaimed American television host, David Letterman, back in 1995. On Monday's episode of "The Late Show" with Stephen Colbert, the star recalled some of her more outrageous moments, including when she flashed David Letterman on his birthday.