The best reason to attach a television antenna to your computer, however, is to use the video card and the computer as a personal video recorder.
The commercial personal video recorder, TiVo, uses Linux running on a PowerPC processor to record television programming with a variety of customizations. TiVo has a clever interface and wonderful features, including a record/playback buffer, programmed recording and pause, slow motion, and reverse effects. Ubuntu does not provide any of the many applications that attempt to mimic the TiVo functionality on a desktop PC running Linux. However, several such applications, including DVR, The Linux TV Project, and OpenPVR, are listed at http://www.exploits.org/v4l/ . These projects are in development and do not provide .rpm files, so you will need to know how to download from CVS and compile your own binaries. For something a little easier, check out MythTV at http://www.mythtv.org/ ; it is available through the multiverse repository.
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