Nice one, I'll comment later, I used to play Enemy territory, doesn't need much skill on aiming, but I learned to move in gunfights basically and timing out the missions, specially with a good team.
Yea Halo seems nice, haven't played it.
I played Enemy territory for a good 4 years.
Thing is about Halo, is that your more likely to play when you start off from the beginning so if you ever pick up Reach it might feel weird at first then you grow into it. its alot of fun