I liked that robot in Vault 101, when you return in that side quest to "save" the vault from the overseer. The robot (Andy, I think) that was made a doctor and butchered a patient and was all nice and polite about it. It reminded me a bit of that "doctor" or med student from that awful movie "The Ruins" that was quite amputation happy. It made me giggle a bit. Pretty much the only time I did that in F3. Then again, it might have only been because it reminded me of that awful movie. Still, score one out of a quadrillion for Bethesda.