I make green chile cheeseburgers in mine all the time. I normally bring the temp of the biggest burger up to 140f, flip the burgers, put the green chile, some diced onion on and add the cheese and finish them off. Even wax (i.e. American cheese) comes out better, but blue cheese or a nice sharp cheddar work great. I was bringing them up to 160, but I got sidetracked (dang beer!) once and they hit 170 and still turned out pretty good. Just make sure you don't get lean burger unless you like them dry.
Salmon is pretty quick too, and while there are things you can do to make it better, you can just take the fillet, slap it in the smoker and bring it up to temp and it'll be very good.