Jennifer Connelly used to use the online username "ecksor", which is a phonetic spelling of XOR (Exclusive OR) - a tribute to her cousin Jerry who is a computer security expert.
Liv Tyler is the daughter of Steven Tyler, lead singer of the band Aerosmith.
Some of Angelina Jolie's experiences at refugee camps around the world were written and published in her popular book "Notes from My Travels" whose profits go to UNHCR.