  This paper will be published in ``50 years of the renormalization group",
dedicated to the memory of Michael E. Fisher, edited by Amnon Aharony, Ora
Entin-Wohlman, David Huse, and Leo Radzihovsky, World Scientific. I start with
a review of my personal and scientific interactions with Michael E. Fisher, who
was my post-doc mentor in 1972-1974. I then describe several recent
renormalization group studies, which started during those years, and still
raise some open issues. These include the magnets with dipole-dipole
interactions, the puzzle of the bicritical points and the random field Ising
model.
