Actor Robert Loggia passed away on December 04, 2015, at the age of 85.
To even attempt to discuss the many and varied roles of this accomplished actor would be folly, when IMDB can do it HERE.
Instead, I will list what, in my own limited exposure to his work, is my favorite role - followed by what I regard as a very unconventional (but fun) one!
Robert Loggia guest starred in one of my most favorite episodes of VOYAGE TO THE BOTTOM OF THE SEA, "Graveyard of Fear" (1966).
Robert Loggia (at left) in Seaview's Control Room, with Richard Basehart, David Hedison, and Robert Dowdell.
In it, he played an obsessed scientist (one of many to board the Submarine Seaview over the series' four seasons), but a remarkably low-key, straightforward, and serious one.
His threats, when made, were to be taken quite seriously, and his "obsession" (unlike most of the show's standard sort of guest lunatic) was not for himself and his own personal gain, making him rather unique in this regard.
Oh, and this episode also features one of VOYAGE'S very best monsters! A remarkable example of special effects work, on a television budget, for a weekly episode produced in mid-to-late 1965.
As for that "unconventional role", try Robert Loggia as a non-sequitur cutaway on FAMILY GUY - in live action!
Loggia, as seen on the FAMILY GUY episode "Brothers and Sisters" (2011).
Loggia's credit on FAMILY GUY.
Loggia also appeared in a subsequent episode, "Call Girl" (2013), in a similar cameo. Why? Who knows? But, the sheer unexpectedness of it was sure funny.
Even in a cut-away cameo, Robert Loggia dwarfs Lois and Peter!
Rest in peace, Robert Loggia. What an amazing career you had!