Get a Weber Smokey Mountain BBQ Smoker or equivalent to smoke the turkey. That's not the geeky part.
Add an ATC (automatic temperature control). This will allow you to set it for precise, unattended low and slow cooking.
Better still, get one with wifi and an internet server like the Stoker Power Draft from rocksbarbque.com. (no affiliation, but I do own one).
You can check and adjust your meat and fire temperatures from inside your home on wifi or remotely via the internet on your smartphone or computer.
It can even email you, or serve twitter updates. Run it with dyndns.org, and give your buddies a simple URL to monitor your cook as well.
Then install Stokerlog to your system, so that you can graph meat and fire temperatures and share temperature graphs with your geeky buddies on the bbq forums.
Use a digital camera and take pictures of the smoke ring (smoke penetration) on a slice of meat. Share it on your favorite photo sharing site.
Lastly, get farkles like an instant read thermometer, (I like the Thermapen), and measure the precise temperature of the meat everywhere on the bird.
The satisfaction, apart from the eating, is taking a stone age process; barbeque; and bringing it into the internet age.
I don't know if you could get geekier than that...