There is a controller in CLT that always uses the "s" on all the airlines...I am sure some of the pilots know who it is, it is the controller that sounds like he is running an auction. Usairs' 235 have a gooood day.I have never heard ATC say "USAir's" over the radio! Where did that come from? I'm a F/A but have been in the flightdeck hundreds of times over the past 19 years and I can honestly say I've never heard it said that way! I do think the "cactus" call sign is fitting for this mess of an Airline....it's very appropriate because it shows NO professionalism like the rest of the Airline! And it should be quite funny to hear that call sign over ATC in Europe!