I am at Peach/Teague, and use an outdoor UHF antenna on a 6 ft mast mounted to the 2nd story roof of my home. The antenna is the old-school $20 flat mesh screen one from Fresno Ag. I receive all the following digital stations: KMPH (FOX 26.1), KSEE (NBC, 24.1,2), KVPT (PBS 18.1,2), KAIL (UPN 53 7.1), KGMC (43), KFSN (ABC,30.1,2,3), KFRE (WB, 59.1), KGPE (CBS, 47.1 - but see my post above), KFTV (21.1), and KTFF (61.1,2). While testing my setup, I've used an indoor el-cheapo antenna, and was able to receive the same lineup, but had to continually adjust the position. Again, this was just for testing. I have some other buddies that have had great luck with antennaes mounted in their attic or just postioned in their media cabinet. Pat, if your listening, what are are/were you using?
As for your last question, my current setup is a Windows Media Center Box. 2 analog tuners connected to Comcast basic cable (could connect my Comcast digital receiver - but why? I want to ditch the dang thing.), 2 digital tuners connected via OTA. I also had a Fedora linux-based MythTV setup prior to the XBOX 360 being released. That worked well too... but just took A LOT of work and I never even bothered submitting it for the WAF test.
Let me know if you need more specifics. Feel free to PM me.