Graphic composed of comics via xkcd by Randall Munroe used under (BY-NC) Creative Commons license  
I am a huge xkcd fan :)   I've included some of my favorites (in no particular order of course!), links to cool xkcd stuff, and a link to my Facer profile where you can download cool xkcd smart watch faces... 

About xkcd
If you've never checked out xkcd before you've been missing out!!  Randall Munroe is the genius behind the webcomic that is published every M, W, F.   

Check out this awesome blog post by Mark Pearson for more info about xkcd!

xkcd is licensed under a Creative Commons Attribution-NonCommercial 2.5 License.  For more about xkcd check out https://xkcd.com/about.
A Bunch of Rocks
Aspect Ratio
Tech Support Cheat Sheet
Science Mnemonics
Los Alamos
Stories of the Past and Future
Purity
Space Elevators
Useless 
Randall signed my copy of What If? at a book signing event in 2014.  We got to chat a little bit about Math and Star Wars while he drew one of his signature stick figures on a page in the book:  How much Force power can Yoda output?
xkcd Password generator
Explain xkcd wiki
xkcd quote database
A brief chat with xkcd’s Randall Munroe—the Thing Explainer explainer via Ars Technica
The Mathematics Behind xkcd: A Conversation with Randall Munroe​ via Mathematical Association of America
How to go to space, explained in the simplest and funniest way possible via Sploid
When Pixels Find New Life on Real Paper via NYT
xkcd Comics Will Soon Be Featured in High School Science And Engineering Textbooks via Science Alert
xkcd:  The Best Comics About Love/Romance via Stefan Mesch
xkcd and the other world-walkers via Bad Astronomy

Watch these awesome videos!

xkcd Facer watch faces

I just started working on this last night (1/26/18) so any ideas or suggestions would be helpful!  One thing I've noticed is that having the date on the watch face is super helpful so I'd like to include that in updates.  I also plan to include more so stay tuned for that too!  Here's my Facer account

Bonus:  Facer Tips and Resources

One thing I've learned is that it helps to favorite watch faces you like on Facer to make it easier to keep track of different faces you want to use on your watch.  Also, it's not difficult at all to build basic faces-- but it took a bit to realize where the documentation and tutorials could be found (see below).  Learning how to build more advanced watch faces are more involved but there are many examples and the documentation/tutorials are easy to follow.
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Facer Documentation start here
Facer Tutorials great examples and ideas
Android Watch Face Design Guidelines basic guidelines to follow
Facer Community forums to find help and help others

Other ways to design smart watch faces

If you're interested in designing watch faces for your smart watch, check out these articles and resources:
​Design Your Own Android Wear Watch Face, No Coding Required
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