Where are all the hdtv tuners?

An anonymous reader writes: Today I read about rabbit ears making a comeback with OTA HTDV. I want to purchase a standalone ATSC HDTV tuner to go with my projector, but I am having a very hard time finding one. The big-box stores seem to only stock one or two models and are frequently sold out. Searching online yields similar results. It would seem that there would be ever increasing demand for these tuners given that many HDTVs were sold without internal tuners in years past and these tuners will be necessary for all old NTSC TVs after the February, 2009 shutdown of analog broadcasts. Where should I look to buy one of these devices? Of the currently available models, which are the best? Will the standalone HDTV tuner become a ubiquitous item as the 2009 deadline approaches?