Used dabs many times myself.
OLED sadly isn't quite on the horizon not for the things I'm talking about anyway, much as I realy, really, wish it was - they'll be a lot more pdas and mobile's with oleds and tiny tvs this year. For the size of tvs people are wanting, realistically we're talking 2010-12. Some technologies have already failed that looked very promising. That said I think OLED will win out and samsung demonstrated a large 31 inch OLED tv at CES in Las Vegas only the other week.
LCDs may not be that dirt cheap as LCD was only ever devised as a budget technology.
BBC HD is a great test channel. It's supposed to be a proper channel but they keep on arsing around with repeats and they still haven't cranked up it's hours. Ofcon's plan is that something like 90% of the population should be able to get the High Definition Multiplex on freeview that would show probably 2 bbc HD channels, ITV HD (launches soon), C4 HD and five HD (we now nothing of the plausibility of five launching one). Unfortunately it involves buying new equipment in the form of a STB even if you already have a freeview box.