MacBook – Can Apple provide the serial number for stolen Macbook Pro

How to get serial numbers for displays:

Go to /Library/Preferences/com.apple.windowserver.plist. Open this with TextWrangler or a similar utility. Look for a DisplaySerialNumber key with an integer value that isn't 0. With any luck, this should be the s/n of your display.
If you haven't used this display for a while, the records of it may be gone.
Also, it appears that this isn't guaranteed. Double-check if possible.

How to get the serial numbers for iPods:

Open /Library/Preferences/com.apple.ipod.plist.
Look under the Devices dictionary. Any iPod you've connected will have all its info there, including the s/n (under Serial Number).

Good luck.

If they do come back to the same network and you just happen to be on and looking.

From the command line.

    arp -an

This will show you the IP and MAC addresses of any hosts active on the network at that time.

    $arp -an

    ? (10.0.1.1) at e4:ce:8f:68:85:c8 on en1 ifscope [ethernet]
    ? (10.0.1.13) at 0:19:7e:b0:37:ff on en1 ifscope [ethernet]
    ? (10.0.1.20) at 64:b9:e8:2b:ab:97 on en1 ifscope [ethernet]
    ? (10.0.1.28) at d8:30:62:76:ab:a0 on en1 ifscope [ethernet]
    ? (10.0.1.255) at ff:ff:ff:ff:ff:ff on en1 ifscope [ethernet]

This will at least tell you if your computer is back on the network. I doubt they would go through the trouble of spoofing the MAC address.

Did you have Remote login turned on? If so and it shows on the network, you could login to your computer. This opens up more options.

Such as:

You could SSH into your computer.

Once in you could run something like this.

    while :  ; do sudo osascript -e "set Volume 10" && say here i am && sleep 30 ; done &

Adjust "here i am" to what ever you want your Mac to say at full volume. I put a sleep 30 in to keep them from just powering it off right away and give you time to find them. It would probably take them a few times to figure out that it was the Mac talking. I'd scope out the Macs in the area before running it so I'd know where to look first.