The store I worked for back in the day, sold the Intellivision console so I played MLB and Blackjack back in 1980 or so.
My first real game was Pirate Adventure for the Vic 20. I never really got into gaming for awhile after that but the next real game that grabbed my attention was when I got the N64 and finally bought Goldeneye. A true classic.
Since then I've become a FPS fanatic. I really enjoy the Resident Evil and Socom U.S. Navy Seals franchises, etc. I gave up the gamecube for PS2 because of the huge library. My favorite is RE4.