I agree with the first and third point, but the second one's unavoidable - if my normal phone rang while I was talking to you, I'd probably tell you to hold on a minute while I answered it.
And yeah, they are getting kinda out there with their new "advances". They're cool, but not absolutely necessary. I've really enjoyed having limited web access on my phone, though - that's useful.
4. After someone's cell goes off in a movie theater, the other theatergoers should be allowed to have a contest to see who can throw the phone and/or its owner the farthest.