Clinton:As to "who cares", it's not real important; that's why it's labeled trivia. But on my sixth or seventh reading I found some information that had gone over my head or leaked from my alleged mind.
I believe there are "only" six names given for Gandalph in LOTR, and the extra-credit info is either explicitly listed or obvious from reading LOTR.
I'm hoping others may chime in with little-known or easily forgotten trivia questions, to be answered from memory, not research.
Dave Oesterreich