In my experience UAL is the only pilot group which consistently tries to get offline jumpseaters in first class. I have commuted for years and I can't think of any other airline where the captains routinely care whether or not you end up in a middle seat in coach or the empty one up in first. Obviously beggars can't be choosers but it's nice to see crews go out of there way to put jumpseaters in a comfortable seat while heading to or from work.....