I remember my first time through the campaign, taking out a Russian base and spotting a Hind flying in. I look over and see a Russian tank and think, 'I wonder if I can climb in that and shoot the Hind down with the main cannon?' ....yup.
Still play it off and on to this day with the sweet ass ECP addon. The PMC Fury campaign is 200 missions of utterly awesome combat. The skills I picked up in that are helping me get through FarCry on realistic lol.