Reader's Discretion Advised

http://archiveofourown.org/works/1607987 (the writing's okay, and the sex is nominal at best, but hey, tentacles)

http://archiveofourown.org/works/555039 (basically a tentacly fuck machine)

http://archiveofourown.org/works/777865 (also comes with some Hulk/Tony BroTP [kind of])

http://archiveofourown.org/works/778008/ (the psuedo-science seems off to me. The arc reactor is, well, a reactor. I'm not that sure what exactly the logic behind it is, but I'm pretty sure it's not a straight-up battery and generates power, not stores it [this is newer, though. i think some of the older ones have something more akin to a battery node in his chest]. As such, when issues arise such as "low power," I think it means more that the power usage is greater than the reactor's power output. I'm not entirely sure if there's some sort of energy storage mechanism in his chest reactor or not. Still, a not-bad fic, and definitely worth the read if you've read the first few and would like to see a deepening of the pre-slash [though some of the earlier ones seem to barely qualify for pre-slash])

http://archiveofourown.org/works/259417 

https://archiveofourown.org/works/543767 (sci-fi)

http://archiveofourown.org/works/2477054 (omega-verse, but a slightly different take than a more traditional A/B/O fic. And yes, unlike Jaune_Chat's, this one does seem happier)

http://archiveofourown.org/works/777412 (EMH-verse. I read it once before watching EMH and some of the characters I didn't know, but I think the general gist still translated over. Still, it does make a lot more sense when you read it after getting past that part in EMH)

http://archiveofourown.org/works/2144967 (I don't think I included this before. This is barely slash, but it's hilarious and I love it)