Lol. It has to be said though, that WiFi hotspots are appearing all over the place, and I expect eventually there will be many TV stations broadcasting over the internet. Radio is definately possible, just get an internet connection from a WiFi hotspot, find a station at
www.shoutcast.com and click on it (using web-pro) and Pocket-Tunes (if you have it - and I think the deluxe version is needed) will start playing the radio station.
Walkie-takie device- yes, again using WiFi. Sorry but again, I'm gonna use my PPC for the example. It is of course possible on a T3 too, I just don't know if the software exists (yet). On my PPC, I can use Skype (Voice over IP software) to make phone calls as long as I have an internet connection (again, where there's a WiFi hotspot.)
I would expect you could have an Ad-Hoc connection between two Pda's within range of each other, and use them as walkie talkies without needing net access. It's certainly theoretcally possible, but I don't think the software exists, at least not for Palms

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One of the developers of MMPlayer was working one a project like that, called MPhone, but it seems to have been dumped as I haven't heard anything about it for a long while
