I especially hate that bit, common to all time travel stories, where the world-weary traveler lists all the amazing things they have seen, in a cockamamie set of set pieces. Oh, you saw the Titanic...and the crucifixion...and apparently nothing interesting between 1911 and 31 AD.
These lists, usually from poor writers, reveal acres about their cultural assumptions and nothing interesting about the characters at all. All you can say is, "Well if that's all Booster looked at and the most interesting observations he's gathered on history, then he's a psychopath. But he's not a psychopath, so the temporary suspension of disbelief here is hurting my head."