I dont mean the "Danger ahead!" or "Ive never seen that before!" lines, or combat dialog, but just sometimes saying things or making comments(like FO:NV characters). It makes them a bit more interesting to have around, even if there are still only so many things they talk about.
So far the only companion NPCs Ive found who will say things like that are Mjol and Cicero, with Cicero being the "chattiest", has anyone found any others?