What is the name of Phoebe’s most serious romantic interest in "Friends", who was a scientist?

Mike Hannigan

Who hid two spies on her roof in Jericho? Which primate is known for its loud howling, audible up to three miles away? Who was nicknamed 'The Mailman' in NBA Basketball? In Latvia, what food is traditionally set aside during Christmas dinner to honor ancestral spirits? Whose estate is known as Graceland?