This could be interesting. I think it had to happen no matter how many of us don't want it to happen. In theory, having phones on the plane should not be that bad but people do have a habbit of talking loudly because:

i) They're obnoxious and want everyone to know how important they are.

ii) Or they are technically illiterate and do not realise that shouting doesn't make that much of a difference with the GSM CODEC.

In practice, I find I can be perfectly well understood when talking fairly softly (even when on the bus, talking to my dad who doesn't have the world's best hearing).

Now, while I wouldn't entirely approve of phone use on the a/c, I would love to be able to use my Blackberry.