zNSFW

Scifi

Wow, Major Carter certainly is patriotic! (mildly nsfw)
Barclay Explains Troi's Breasts - possibly nsfw text if your office is strict
Star Trek meets bodypainting [NSFW]
If C3PO had nipple tassles. Anakin must have built this version in his adolescence
Is it just me or is this kind of creepy? Caprica poster with nude 22yo actress that
LeVar Burton. NSFW.
Badass. [nsfw]
Miranda is in our solar system...
Here is a painting from a dedicated Trekkie [Slightly NSFW]
Comic con [NSFW-ish]
Just following orders
why do sci-fi actresses seem to strip down more than in other genres? NSFW
The BEST part of that Nathan Fillion video can be found in one screen capture :D
That sure looks like Marina Sirtis about to get her 
boob sliced with a scalpel,
She looks a bit like Kaylee (NSFW)
Dawn Summers and Starbuck are up to something, but I don't know what it is.  Needless
TK-421, why aren't you at your post?
Something I worked on a while back in the style of Sorayama [NSFW]
Tricia Helfer from BSG [NSFW]
Cape of Dicks, put this in your pipe and smoke it.
A drawing I made, what should I add to it?  (slightly nsfw)
NSFW KIRK
For the Sci-Fi ladies out there...[NSFW]
reddit likes homemade stuff? this is a story i wrote 
about a soldier of the future...(mild
That girl who was the Cylon in Caprica as Barbarella [mildly NSFW]
A swank poster hanging in the latest episode of Two and a Half Men. I want it.
Barbarella
Show you the force, I will [Mildly NSFW]
Total Recall Birthday Cake [NSFW]
The Total Recall reboot may suck, but I'll still go see it for this
Kansas Woman Forced to Birth Alien Baby
Adult Wesley Crusher vs adult Whil Wheaton
How my girl and I like to watch stargate (NSFW) [X-post GW]
All I know is, this shit is *prime* directive. [NSFW]
How could they cancel this?!? (Question/story in comments)
Invaders - FROM SPACE!
SciFi
"SciFi Fuckers" by hizzacked
Half naked women get thousands of upvotes; how many for our boys in blue?
scifi horny girl
Unrequited Love in Space [NSFW Starcraft][Root]
SciFi-Waifu
Scifi Bimbo?
Sexy Cyborg
SciFi Futa Autofutallatio
[SciFi/TGTF] Sci-Fi Ninja by ibenz009
[SciFi/Bimbofication/Corruption/Hypnosis] Bimbos In Space!! by Wren Zephyr
[SciFi/Alien] Subject 050: Tefi by 2B-Labs
[SciFi/Petrification] Hellish Carbonite by Antischwert
[SciFi/ASFR] Yue Ayasegawa - Neurosentry by C91
[SciFi/ASFR] In Mercydrone's Clutches by Dreampaint Loon
[SciFi/ASFR] Mecha Girl by Mokachu
[SciFi/ASFR] 129 by nradiowave
[SciFi/Bimbofication] Law and Order in The World by Uberis
[SciFi/Immobilization] The Autobazaar by Uberis
[SciFi/Immobilization] The Racer by Uberis
[SciFi/Alien] Conversion by blackshirtboy
[SciFi/Alien] Space Princess Casting by InkyFluffsDraws
[SciFi/TGTF/ASFR/Suiting] Hey, Cortana! by Kannel