The last time I interviewed somebody at the Liberty Hotel it was known as the Charles Street Jail. That was about 25 years ago and the subject of the interview was a white-bearded, sleight, elderly fellow known to some as "The Globe Man" -- not for any journalistic reason, but because he used to ride around Harvard Square in an old station wagon inscribed with countless cryptic writings and surmounted by a huge, papier maché world globe, about eight feet in diameter.