To have a defined Erdős–Bacon number, it is necessary to have both appeared in a film and co-authored an academic paper, although this in and of itself is not sufficient as one's co-authors must have a known chain leading to Paul Erdős, and one's film must have actors eventually leading to Kevin Bacon.

(http://www.autoadmit.com/thread.php?thread_id=5858074&forum_id=2)#49824854)

American actress Danica McKellar, who played Winnie Cooper in The Wonder Years, has an Erdős–Bacon number of 6. While an undergraduate at the University of California, Los Angeles, McKellar coauthored a mathematics paper[25] with Lincoln Chayes, who via his wife Jennifer Tour Chayes[26] has an Erdős number of 3, giving McKellar one of 4. Having worked with Margaret Easley, McKellar has a Bacon number of 2.[2]

(http://www.autoadmit.com/thread.php?thread_id=5858074&forum_id=2)#49824856)

Israeli-American actress Natalie Portman has an Erdős–Bacon number of 7.[32] She collaborated (using her birth name, Natalie Hershlag) with Abigail A. Baird,[33] who has a collaboration path[34][35][36] leading to Joseph Gillis, who has an Erdős number of 1, giving Portman an Erdős number of 5.[37] Portman appeared in A Powerful Noise Live (2009) with Sarah Michelle Gellar, who appeared in The Air I Breathe (2007) with Bacon, giving Portman a Bacon number of 2.[38]

(http://www.autoadmit.com/thread.php?thread_id=5858074&forum_id=2)#49824862)