I've always been tempted to play with this more, but I just know I'd spend too much time with it: There are apps that will feed web audio streams of emergency radio frequencies. The frequencies are public record and some are fed over the Web which would make them work with those apps.
I think I may have shared this before, but I can't remember: ServerUp uses your phone's network connection to monitor if your servers are still up and running.
Samsung released the Froyo update for my phone a few days ago, but apparently the update is now on hold. It's been working OK for me, but I haven't pushed it too hard or tested it out much, so I'll just keep my finger's crossed.
Ever wanted to know what the life of a gigolo is really like? Now you know.
Ever wanted to know what happens when you stick your head in a particle accelerator? Now you know.
Every wanted to know what happens with you try to BBQ a fire-proof hard drive? Now you know(OK, enough of that "Ever wanted...". Sorry...).