I tend to have companion mods running for only a short amount of time, and haven't found many good ones, and was hoping to find a mod that wasn't just a bland run-of-the-mill companion mod.

Willow
Well, we all know here that my favorite companion is the Willow. Just because she got interacting with the world of fallout is already a plus for me, just wish I had more like her companions.

Russell is my favorite. Overall useful companion, great VO, and an awesome main quest. Best of all he doesn't sing!

There's a mod that lets you hatch a baby deathclaw and raise it as your own. That's pretty badass, plus it does a ton of damage, and it's just cool to have a freaking deathclaw be your bud following you through the wastes. I even think it'll attack other deathclaws for you, which is handy. Plus, it ages, so it doesn't come out full grown, and you gotta feed it too. Very neat little mod.

Not an actual companion, but one of my favorite companion mods is JIP's Companions Command & Control. I can be so much more tactical with my companions instead of walking over and talking to them each time I want them to do something different, right in the middle of combat.

I like Veronica and the baby deathclaw. Willow is pretty cool as well.

I like Scrap dog "F1D0" in Monster War MOD. He a robot. He not need to mush. but he not strong enough to fight with some strong enemy.

i made my own he is a very simple one no dialog or companion wheel but he is my favorite cuase he is unique to me

There's a companion mod over on the Nexus and he's called Niner. http://www.nexusmods.com/newvegas/mods/48002/?
Pretty fun quest to get him and i just think he's a pretty neat mod.

My favourite companion mod is Vincent Vincent, he is hilarious and has basic survival skills such as building a camp fire which is extremely useful for in hardcore mode, unfortunately though the mod is extremely underrated so y'all should go check it out, you won't be disappointed, peace.
Here's the link http://www.nexusmods.com/newvegas/mods/55266/?