Re: This is what I call intrusive
All music/video items are used to pause/restart whatever is playing so you can take/make a call. Also for custom ring tones.
Photos are used to send/receive images and to select an avatar,
Use data on external devices required if any of the above data items is stored on an SD card.
Use your phone is used to switch to/from calls over your MSP service.
Anonymous MS account is a way to associate the device with an account without logging on so that Skype can ring when it gets a call even if you aren't yet logged into it.
Information about device is used to determine device capabilities. (Screen resolution, number of microphones, noise cancellation, etc.
Sensors is used for several things. One example is proximity to auto switch on/off the speaker when you put the phone down or pick it up.
Act as a server is required under the current perr-to-peer environment to do things like group calls.
The ones I don't know about are location, maps and calendar access. Anyone else?
NFC is used for contact 'bumps'. (I assume.)