I'm on my way to being obsessed. I actually have two farms like that! You flip a switch and it harvests the food for you :)
I played MegaTen online very briefly, but I couldn't get into it because I was too into WoW at the time. I might pick it up again ... I liked the mechanics of WoW and I love love LOVED tanking in that game, but I have some bad memories attached to WoW so I don't play anymore.
I had Mahjong on my phone, but I mostly play Bejeweled if I want something to do that doesn't require thinking!