I thought about placing Point and Click Adventure in the poll but doesn't the genre fit in under puzzle? I tried not to list too many genres and use their purest form as possible.
Perhaps you're right Cthulu lord of the deep. I think RTS games requires some QUICK thinking however. You can have hundreds of units at one time, you have to keep track of your resources, the entire map, your enemies armies and his resources. When battles occur it can become pretty hectic too...
We have all been on the streets enough to hear "Call of duty is dumb just point and shoot". What genre typically then do you feel requires the most out of our brains?