Here's custom content I've created for The Sims 2. If you use it to make a story/pics/etc. please post a link to my LJ and give me credit.

I could upload them to the Exchange - maybe I will eventually - but for now here are my Sims2 skins, free for you to use! Custom content is skin tone (just for Data), eye color (yellow for Data, darker brown for everybody else because I don't like the default brown), and clothes (clothing skins only; the Uhura mesh is from the original Sims 2 and the Spock and Data meshes are from Apartment Life. I don't have any non-Maxis meshes). It should all work fine, I used Body Shop to make all the custom content but:

DISCLAIMER: there is always the risk that custom content could screw up your game and force you to reinstall. Back up your game before you install any of these files.

SIMS
Star Trek: (click here and here for the posts with pictures of them)

Data sim

Download Data

Uhura sim

Download Uhura

Spock sim in uniform

Download Spock
I made the custom eyecolor, eyebrows, skin and clothes. I downloaded the hair here: Vulcan and Romulan male & female hair with custom mesh

Here's the skin (different from the Sylar skin):
Spock sim in his underwear

NEW! James T. Kirk!
Kirk sim

Download Kirk

And here's a closeup of the custom eyecolor and hair, plus he's wearing his cadet uniform (it's not great, I'll use it but I wasn't going to put it up for download unless someone really wants it)
Kirk closeup in cadet uniform

Heroes: (click here for the post with pictures of them)

~~download Sylar~~ or scroll down for the new, improved version with more custom content!

download Mohinder

New custom content for Sylar! (I'll just upload it as a whole Sim, that's the easiest way)
Custom Sy-brows!
Custom skin with Bat Signal™, Happy Trail™ and arm hair for which I can't think of a cute name!
Custom outfit with peacoat from Season 4!

download peacoat!Sylar

There's no Mr. Muggles, I'm not sure how to export pets - I think if I were going to export him as a file by himself, I would have had to do it on the Sim Creation screen. He's not hard to make yourself, though. I think I got his tail wrong anyway, I should've used the curly tail. I don't know why there isn't a Pomeranian as one of the default types, those are pretty popular dogs, aren't they?

WALLS
Since someone requested them, here are the .jpgs for the walls of Sylar's secret room (for his craft projects). Use Maxis' Homecrafter to make them into wall coverings for your game.