Many thanks to TarPitWu for starting this thread. I had intended to post something similar a couple of years ago, but never got around to it, so it is much appreciated. Hopefully this threat can serve as a resource of sorts for others looking for this information, or for members of the community to contribute (as they have generously done so above).
I compiled a small list of scenes in JAV movies that I had seen of either M/F snowballing or kissing with cum still on the woman's face or in her mouth as I came across them (and personally I'd love to add creampie eating and such to the list as well). In most cases I added some sort of brief note about the scene or where to find the particular scene, but apologies in advance for the ones that are vague, as this is an old list (and thus I also hope that I didn't mix up any of the title codes).
I am sure I have seen others, but have not marked them down, so hopefully the members here will continue to contribute to this thread.
ABS-206: After the school nurse finishes two blowjobs and a little cumplay, around 1:02:18 she kisses a third guy before giving him a footjob and a blowjob.
ARMG-202: I don't recall having seen this one, but the entire theme of this video seems to revolve around snowballing. If someone can verify that this isn't spit-swapping or something else, it would be appreciated.
BLK-083: Around 1:26 she receives a creampie and then blows another guy. After that, they kiss and she straddles herself over his face.
BLK-110: Scene near the end.
CRPD-344: I recall a scene in this where Maria Ozawa, bound in something not too unlike what is shown on the front cover, receives multiple facials, and an older man kiss her or sucks on her tongue.
CWM-171: After receiving a blowjob in the shower around 1:19, she kisses the guy while there is still some cum on her face.
DLD-004: Near the end of the movie, after one guy cums on the woman's face, he kisses her sometime shortly after.
DV-1286: The always amazing Yuuki Makoto finishes off a guy by giving him a great blowjob and then kisses him on the lips for a short while with cum still splashed on her cheek.
IPZ-063: After she receives a facial from a guy, a second guy kisses her multiple times while fucking her.
JUC-163: Around 1:22, she finishes off a guy with a buttjob/handjob and licks the cum off her fingers. After that, she gives him a series of kisses to the mouth.
MXGS-502: After an older guy cums in her mouth (despite most of the cum overshooting her and landing on the bed), she plays with the cum in her mouth a bit before snowballing him back. She then continues to play with the cum in her mouth.
OBA-005: In the last scene, a guy cums on her breasts and in her mouth, and afterwards, they embrace and kiss.
OBA-040: Around 38:50, a guy cums on her breasts and she sucks the remaining cum from his dick, and after that, they kiss.
QEDD-022: The middle and end scenes contain cuckolding where I believe he licks another man's cum from her pussy.
SUPD-099: Around 1:03, she plays with his cum before giving it back to him.
SVDVD-343: At the very end of the movie, around 2:40, she fucks two guys (one Asian and 1 White) and receives a creampie from each. The white guy eats her out after that.
I do also have at least one more movie where a mature woman shares the man's cum back with him, but I don't recall the title code offhand. From what I recall, in that scene, the guy is sick and home from school, and his "mother" helps him feel better by fucking him. After he shoots his cum into her pussy, she climbs on top of his face and lets it drip down into his mouth. I will look for that title code as soon as I remember to.
