I've been posting this series in bits and pieces, mostly on Supernatural and crossover communities, but seeing as so much of what's been written (and remains to be written) is more Inception-focused than SPN, I thought it might be worth posting links to the stories here. As you can see from the individual story headings, it's a multi-ship 'verse with an emphasis on the Arthur/Eames and Sam/Arthur pairings/love triangle. (Mods, this will run amok with your existing tags, my apologies!) Spoilers for both the movie and almost all of Supernatural canon (through 7.02) abound.
The following links and brief headers/summaries lead to the DW posts with complete headers, which are also crossposted to LJ for those who prefer to comment there. I suggest reading in posting order, as chronologically things get a little tricky.
The CallPG-13, Slash (Arthur/Eames, Sam)
(1,802 words)
June 2012Summary: Sometimes, destiny calls while you're still getting dressed.
The DrivePG-13, Slash (Arthur/Eames)
(3,574 words)
June 2012 (5 hours later)
Summary: It's a long drive from Pierre to Sioux Falls.
Who Knows What Might Be Lurking
PG-13, Multiple (Arthur/Eames, Mal/Dom, Sam/Arthur)
(1,809 words)
August 2003, September 2008, May 2010, June 2012Includes: Canonical character death
Summary: Mal survives in different memories in different ways.
Discreet and Discrete Lives
NC-17, Slash (Sam/Arthur, Dean, Bobby)
(4,018 words)
January 2008Includes: Graphic sexual content
Summary: Sam never expected both of his lives to catch up with him at once.
The series is also collected at AO3 [
link] if you prefer their warning/labeling systems.