In chronological order:

John Denver
Jacques Cousteau (yes, I know)
one of my teachers ...
Leonard Nimmoy
Stan Rogers
another one of my teachers ...
Patrick Stuart
Kathleen Ferrier (sp?) (the contralto singer of art songs)
Robert Silverberg
Ursula Le Guin
another SF writer or two
other folks ...

Oh, I have it bad, still. ;)

T