My favorites are (in no particular order):
Heroes
The Dresden Files
Eureka
Primeval
Carnivale
Lord of the Rings - Best fantasy movie to date in my humble opinion
Monty Python and the Holy Grail
Star Wars
Raiders of the Lost Ark
Harry Potter Series
The Matrix Series
Conan the Destroyer
Dune
Aliens
Jurassic Park
Willow
Terminator Series
Star Trek - Wrath of Kahn
Yellowbeard
Time Bandits
The Three Musketeers - Michael York, Raquel Welch, et. al.
Dr. Who - BBC television series - Tom Baker years in particular
Robin of Sherwood - BBC television Series - Michael Praed seasons in particular
Red Dwarf - BBC television series
Farscape - television series on the Sci-Fi Channel