Chess! I love chess!
To be honest, I'm so addicted to it that I have a virtual (computer) mentor that gives me certain challenges that I should solve >.>
Although tbqh, I sometimes ignore certain plans of attack the opponent makes and continue my own plan of attack instead, sometimes letting the opponent get through my fail defenses and corner my untouched king
I do have an achievement I wish to brag to everyone though... I beat around five people with just four moves. (Is anyone familiar with this?) :D
I find it interesting how many people don't know the en passant rule and how easily I can take advantage of it. xD
Aside from that, I also find it entertaining to watch matches like Championship Matches, GM/FM/IM Matches, etc. Like that match between Deep Blue and Kasporov.... learned a lot from that tbh >.<