Have you checked the datasheet for this? I think that you can select four different addresses with the ADDR connection of the tmp102 (connected to ground, V+, SCL and SDA).
On the hardware side I think it is just a matter of parallel connecting the chips, just connect all the SCL lines to the same SCL line of the Pi. The same goed for all the SDA lines. I read somewhere that this should work just fine, but also some reports of people that needed a pull-up resistor.
Datasheet for the tmp102 breakout:
http://www.sparkfun.com/datasheets/Sens ... tmp102.pdf
Connecting multiple devices:
http://www.instructables.com/id/Questio ... C-Devices/
Hope this helps.
PS: Love the beginners video's. They helped me a lot when I just got my Pi and I still use them regularly.