Jsut a regular pair of rabbit ears, nothing special, not even a UHF loop. It's connected to an indoor antenna amplifer. Theyre both from radio shack and probably a good 10-15 years old. I was quite surprised to get as much in and I do since everything I read says rabbit ears were not good enough to pick up signals. I know people that live in Madison and cannot get the digital stations!
Your people in Madison must be doing something wrong then. I live 12 miles away from the broadcast antenna's and pull in 16 over the air HD channels. I use a simple set of rabbit ears as well.