I use lotion or body butter depending on what I have gotten. I hate hate HATE baby oil. I hate the smell of it (including baby powder and baby lotion... I hate the smell of babies, too).
Mostly I stick to using almost anything in the St. Ives line of lotions and body washes, but sometimes, when I need to save a few bucks, I buy the huge bottle of Queen Helene Cocoa Butter from Dollar General for $2.50. That stuff has been known to last me for six months at a time!
I'm always moisturizing after I bathe because my skin is so dry. I'm trying to get my girlfriend in the habit of it as well. Her skin is pretty dry, too and her hands are absolutely WRECKED.