If you click on those titles (or the text next to the titles), the information changes to show you the following:
- Software Version » Build Version
- Serial Number » UDID Identifier
- Phone Number » IMEI » ICCID
[robg adds: I couldn't get anything to change with my iPods (though I don't have a touch to test with), but the Apple TV's Software Version cycles to Build Number, and its Serial Number cycles to IPv4 Address. I also noticed that -- even though you can't select the UDID -- you can copy it. Just make sure the field is showing UDID, then press Command-C. Switch to another app and press Command-V, and the UDID will show up. (If you test iPhone apps, developers need your UDID to send you an ad-hoc build of their app, so this eases the process somewhat.)]

