We are only getting WMC-TV in digital right now. They started their digital broadcast with the Olymics opening ceremony. The rest of the stations should be broadcasting by May 1 unless they have filed for an extension with the FCC.
I get four OTA channels (CBS,ABC,NBC and Fox[480p]) plus HD-HBO and HDnet via DirecTV. PBS, UPN and WB are on the way around here. The receiver + dish + install kit only cost me $550...
When I bought the equipment it was just ABC and CBS + the satelittle stuff, and I still thought it was worth it.
Once you see HDTV in your home you will say it was definately worth it. I paid $1000 for the my first USSB/DTV STB in 1996 so paying $500 for the Sony SATHD100 was quite a deal.
I have DTV so I get HDNET 199 and HBO 509. For OTA I get PBS 2.1, 2.3, CBS 4.1, FOX 7.1 and ABC 10.1 in South Florida.
My wife now hates watching anything that's not on HDTV.
One thing that I found very amusing was that I had to install an outdoor antenna to get OTA.