Is this normal? I'm able to raise skills above 100, but it seems like they should cap @ 100.
Wondering if others are able to do the same, and if so, what it does if anything.

Thats the way Fallout always worked and I'm glad they brought that back!

No, they should cap at 100.... It must be some sort of glitch.....

I think it would only be useful for guns, energy, explosives, unarmed, melee etc...

yeah mine cap at 100 must be a glitch

Or a mod. The popular Darnified UI allows skills to go over 100, but that doesn't do anything, you need another mod to make use of them. Fallout 3 had Wasteland Mastery mod, maybe something similar already exists for New Vegas?

Ah, I'm using Darnified that must be it.