Crown of thorns

sacred-flesh
This image is a frame from the 1999 (some sources say 2000) nunsploitation movie Sacred Flesh (IMDB entry). There is a related frame here. Additional screencaps are here.
Image provenance by Bacchus at Erosblog.

Snake trouble

budd-neocene
This artwork is by comic artist Budd Root (see confirming signature) who is best known for his independent comic Cavewoman. A non-nude version appeared in his Cavewoman: Prehistoric Pinups series, and a nude version (with different coloring) appeared on the cover of one alternate edition of Prehistoric Pinups #3. The version shown here is labeled in one place “Cavewoman Cover Colored by Neocene”, but no further information is available about that colorist.
Image provenance by Bacchus at Erosblog.

Fucked by the gel-monster

viper-gel
This is another of the many short animated clips contained within the 2002 eroge game Viper-RSR from the now-defunct Japanese game company Sogna. (According to Wikipedia, Sogna’s games generally featured “young Japanese girls who, in one way or another, find themselves either kidnapped or attacked by monsters, cyborgs, or aliens.”) This forum thread identifies the redhead as Akira Honjoji, the main character in the “Rise” series of Viper games. The animation appears with several other Viper-RSR clips on this Japanese-language site.
Image provenance by Bacchus at Erosblog.

Surgery

beautiful-brain
This image is from the first page of Chapter 9 (“Angel”) of artist Waita Uziga’s guro manga Shin Gendai Ryoukiden (also titled 真・現代猟奇伝 or True Modern Stories of the Bizarre). There is a related panel on the last page. Waita Uziga’s web page is here.
Image provenance by Bacchus at Erosblog.

Demon beasties

larry-todd-skull-4
This artwork is by Larry Todd, an illustrator for Last Gasp and others. The artwork appeared on the back cover of Skull #4 (titled as “Skull Comics” in earlier numbers). Skull #4 (“Special Issue: Lovecraft”) was printed in May of 1972.
Image provenance by Bacchus at Erosblog.

It’s for science

zoetimerotor
This is Doctor Who fan art (artist not known) featuring the character Zoe Herriot enjoying the time rotor in the center of the Tardis console. Amusingly, Wikipedia describes the time rotor as “a moveable column … in the centre [of the console] that bobs rhythmically up and down when the TARDIS is in flight, like a pump or a piston.”
Image provenance by Bacchus at Erosblog.

Briny depths

kamui-gaiden
This is artwork by legendary manga artist Sanpei Shirato. The Google mechanical translation of this Japanese page appears to suggest that the art is related to the 2009 movie Kamui Gaiden, which was based on Shirato’s manga series (dating back to the 1960s) of the same name. The Wikipedia entry for the movie mentions “underwater battles” which perhaps helps confirm the connection.
Image provenance by Bacchus at Erosblog.

Seppuku

tumblr_kubs0nBmQe1qze93ao1_400
This is an excerpt from a slightly longer animation said to have been created by Juan Gotoh, although it seems no longer to be found on his website. In the longer version of this animation, our suicide girl can first be seen kneeling and making a short speech before her assistant draws the katana. The longer clip then concludes with the dead girl’s wide-eyed still-talking head landing and bouncing. According to a comment on this Japanese-language website, the animation was released as part of a 2005 collection of computer graphics (CG) by Gotoh, which collection remains available for purchase.
Image provenance by Bacchus at Erosblog.

Vacuum-packed girls

zardoz-vacuum-packed
This image is from the infamous 1974 science fiction movie Zardoz, starring Sean Connery. A caption here describes the scene as “Sean Connery as Zed hides amongst the Apathetics.” The movie is available on YouTube but only visible to signed-in users due to R-rated content.
Image provenance by Bacchus at Erosblog.

Pod

crusher-joe-pod-girl
This is a frame from the 1983 Japanese animated film Crusher Joe. This YouTube clip appears to be a sequence of opening credits that begins with the camera lingering on this image for several seconds.
Image provenance by Bacchus at Erosblog.