which films show ejaculations?, gide lines 1mainstream film, or, a mainstream person involved. no male/male sex, or animal sex
i have a couple on mind
caliuga(even though it breaks the list i thought i mention it)
romance
baise moi(?)

"Alice in Wonderland (1976)" was re-released in XXX home video and had Kristine DeBell (MeatBalls and some soaps) in it. Had lots of spunk shots.

There are very few non-adult films with ejacualation shots. Some have shown the semen, but not the ejaculation (There is Something about Mary).
I have a few on my website.

It is really tough to draw the line between a mainstream actor and porno. Such porn stars as Ron Jeremy, Richard Bolla, Tracie Lords, Sharon Mitchell, Savanah, Rick Stevens, and I am sure many others have appeared in mainstream fare.

I believe the oriental film "In the realm of the senses" contained explicit scenes. There is at least one clear "entry" shot and a blow job scene where the actor ejaculates into the actresses mouth - you don't actually see it happen but you see his semen drip down her chin.......have a look if you can get hold of it.

Regards....