Freddy Prietz(sp?) best controller I ever worked with. Retired from ATC now handles ramp tower at the D concourse at LAS. Heaviest New York accent you've ever heard, can't miss it. If you fly into LAS and park at "D" tell him hi. Anyways it was in the 70's, late at night, a PA-180 doing practice ILS 25 approaches in Vegas when a United DC-8 checks in. Freddy issues them a speed restriction, but they keep coming. A few minutes later he gives them another speed reduction to no avail. Finally, in the slowest, thickest New York accent you can imagine he says: "United, the number is 180, you can make it your airspeed or your heading, what's it going to be , Gentlemen?