There have been many depictions of our favorite couple over the years, as I'm sure you are aware. Your mission, if you choose to accept it, is to have someone from the LnC verse meet someone from one of the other continuities. Maybe the LnC Clark meets Jordan and Jonathan, or Lois gets to give Movie!Superman an earful. Heck, maybe it's Perry White who gets to see how the other side lives and put his yodeling skills to the test!

Fics like "Group Therapy" and "Plane Storm" are good sources of inspiration if you want a kick-start, and feel free to post links to any others you want to promote: the more, the merrier!

Any size will do. Any tone will do. Explanations are optional. Well, FoLCs, how about it?

EDIT: Here's the link for Group Therapy
http://www.lcfanfic.com/stories/2006/html/groupthe.html

No stories are springing to my mind (either novel ones I could write or other people's I have read), but I love the concept and hope your challenge generates a lot of takers.

Some fics to promote:

Matrix's Supermen United (probably epic length)

Dandello's Coffee at the Bakery and its sequel The Bakery Redux

Her Plane's story as mentioned by Queenie Plane Storm
and its excellent sequel After the Storm

Bob Bartholomew's The Pub (an AU with cameos by other Superman characters)

That's all I can remember just now.

Supermen United also has a Sequel, Superman Divided". There's also a crossover Story with Smallville on ff.net that also Features an Explanation for the Baby at the end of the series. I'll look it up and post the link later.
EDIT - there you go:
https://www.fanfiction.net/s/2563597/1/Son-of-Jor-El


Love the idea. May come up with something myself, if I can find the time.