After doing some extensive modding of Skyrim I decided to embark upon adding a completely new creature the Dalek to Skyrim (not really lore friendly!). This included custom skeleton, mesh, animation files, but I hit a brick wall with animation text files, so after messing around I decided to put them into FONV and as you can see I've been having much more success.
Dalek moving up corridor.
http://i1369.photobucket.com/albums/ag209/Mindboggles/ScreenShot17_zpsede17872.jpg
http://i1369.photobucket.com/albums/ag209/Mindboggles/ScreenShot18_zpse7ef1036.jpg
Daleks in dim light.
http://i1369.photobucket.com/albums/ag209/Mindboggles/ScreenShot13_zpsc40cd7df.jpg
http://i1369.photobucket.com/albums/ag209/Mindboggles/DalekTarget_zpsc1c5d8a8.jpg
Daleks in outdoor light.
http://i1369.photobucket.com/albums/ag209/Mindboggles/ScreenShot15_zps6a0da60c.jpg
http://i1369.photobucket.com/albums/ag209/Mindboggles/ScreenShot14_zpsc8a32d26.jpg
VATS Dalek.
http://i1369.photobucket.com/albums/ag209/Mindboggles/DalekVATS_zps632803ba.jpg
I have only made up a few animations so far and barring any major complications I should be able to get them in as fully working creatures. I forgot to include some pics of them blown to bits and I had to include the meat caps as part of the original mesh (you just can't see them until they dismember). There is no ragdoll for them but their dismembered bits tumble around nicely.
Now I want some of your input about how to introduce them into the game! I have the idea of either they were part of yet another vault experiment, or a post war enclave (or pre war military) experiment. So if you have suggestions on a story and possible location post away!
I'm starting to get a handle on the kf animations for NV so I'm not ruling a basic animated Dalek creature (you know the horrible one eyed creature inside the Dalek body) as maybe part of their labs.