One that hasn’t been brought up yet is Mulholland Dr. For home release David Lynch blurred Laura Harring’s bush in her full frontal scene. I didn’t see it in the theater so I’m not completely sure it was unblurred originally or it was always censored.
http://www.imdb.com/title/tt0166924/alternateversions?ref_=tt_ql_trv_5
The DVD and VHS versions of the film were self-censored by Lynch for sexual content. He had an additional blurring effect added to Laura Harring’s crotch in the scene where she climbs into bed with ‘Naomi Watts (I)’. The blurring was requested by David Lynch himself because he disapproved of nude pictures of Harring being distributed on the Internet.
“An additional blurring effect”, seems like the scene was already blurred in the theatrical version and he increased it.