The first anime I ever watched was Speed Racer (Mach GoGoGo), I enjoyed it a lot. After that, I was not into Anime much until I watched Ghost in the Shell: Stand Alone Complex and Eureka on Adult Swim. At this time I really was only into Mech style Anime.
I have started watching more and more Anime in the past 6 years or so. I watch different types of Amine from Action to Soujo. Just recently I have been watching Anime like K-ON and Railgun and seem to enjoy it. It's probably because there is not much action Anime out at the time.