According to the NY Post, Thora was filiming a sex scene with Dean Winters when her Dad insisted on watching the scene, kicking the door down and threatening to pull Thora from the film.
Hah, I can't even imagine how embarrassing this would be.
Read more at...
http://vipglamour.net/2007/03/27/thora-birch-is-daddys-girl/
and the original article:
http://www.nypost.com/seven/03272007/gossip/pagesix/pagesix.htm
See more below!