Mine is called Screamin Demon and is named after my roomates three legged cat with cone on head. I first called it IRS Payment Service but changed it when I got a new router.
UK-centric, bu the best one I’ve heard of is ‘Get orf my lan!’
I call my network “Cortex”
I do the exact same thing, except I use the word “gate”.
My sisters wireless network is called “free internet 4 all”
KiDDie P0rN CeNtRaL
After checking repeatedly to see all of my neighbours’ networks while reading this thread, I think we’ll rename ours to “Hi Neighbour!” 
Depending on the design and configuration of the router, it might also make them a peer on your LAN - so they could (possibly) gain access to your files, print things on your printer, probably other stuff too.
Try PHISHER.
Mine is called Xanadu (as in Kublai Khan, not Olivia Newton John).
I was going to suggest “al-Qaeda,” but I have to give way to this one, which is my favorite so far:
Is it? 
My housemate owns the router we’re using, so he got to pick the SSID, and he always picks names that contain the number of people living at our house. I can’t remember past ones he’s chosen, but our current one is Four Seasons Cafe. We’re moving in a week (gaining one person and losing two), so I’ve been trying to think of a name that incorporates “three.” So far, the front runner is three-legged jeans.
I like mind control ray and disconnected. In homage to another xkcd, you could pick a name that references the virtual virus aquarium in the comic titled “Network .” Hell, you could call it virtual virus aquarium.
I went with teh intarwebs. I don’t know: it just gave me a chuckle. (Thanks It’s Not Rocket Surgery! !)
Viewable from my new apartment are these boring networks:
Bones
cole215
default
HORN
Queen Village*
208Street**
Ben_Jamin
linksys
Mine is definitely the coolest.
*This is the name of my new neighborhood.
**Since I’m in 210, I assume this is my neighbor. Street name changed to protect anonymity.
The IP address of the NSA is 12.110.110.204.
Yay! I’ve now named a Doper’s network AND a Doper’s horse.
Think of the embarrassment Gwen Stefani and Gavin Rossdale could have saved their kid, if only they had checked with me first…
I’ve named my laptop MasterBlaster (for no particular reason), and was going to name the router the same, but I like some of these suggestions.
Open Access Internet (but with WEP,WPA and MAC filtering)
Get off my LAN…damn kids (Brilliant suggestion!)
This isn’t the router you’re looking for.
I doubt people would try to access these ones.
ERROR 404, CONTACT LOCAL SUPPORT DESK
SERVICE FAILED, PLEASE RESTART
Critical error. ABORT? (Y/N)
How many characters are allowed?
UNABLE TO RESOLVE SSID /? /^END would be pretty good too.
Then you could name it NSA Node 0C6E6ECC.
It was “RonpaulblowsassandI<3abortion”
Classy college kids. Wonder why I transferred? :o
To discourage all non-approved access, I’ve always named any wireless access points I set up as “Virus Detected!”.
So far, none of the systems I’ve set up have been messed with .