Apologies in advance and I am hesitant to answer for being tricked but are you ..

>! Dam 

I was going to say  


>! Damn, it's not Brent Hackers 
 
Feel me rise in anger
>! Dam risen is mad

I am the emptiness that fills
>! A dam is a reservoir that is filled with hopefully water

An obstruction, I may choke you
>! A dam is an obstruction in say a river and Choke dam is in Texas and creates a large reservoir.  

Yet many enjoy me
>! Dams can be nice places for sight seeing, fishing e.t.c and also enjoyed for the water it provides