Turok.
The first two fantastic games have been ruined by horrible sequels. A lot of people laugh at me when I say that Turok: The Dinosaur Hunter is one of my favorite FPS games because they have only played the newer crappier ones. Bad sequels unfortunately attach a stigma to what would be looked at as a phenomenal piece of art. Look at the movie Halloween. A lot of people say that it sucks because they haven't seen the original and associate it with Michael Myers getting into a fight with Busta Rhymes.
Proud member of the SONIC SUPPORT SQUAD
Tag "Sorry man. Someone pissed in my Wheaties."
"There are like ten games a year that sell over a million units." High Voltage CEO - Eric Nofsinger