Firefly Crossovers
Firefly
Love Games by Sorrel
Summary: “Clark Kent used to be Superman.” It’s five hundred years in the future and the boys have reached peace with themselves and each other. Then one day Clark takes passage on Serenity, and that’s when the games begin.
Part 1, Part 2, Part 3
The Rarer Action by danceswithgary
Summary: Lost in the future, can they forgive each other before it's too late?
The Things I Cannot Change by DarkEmerald
Summary: When something unexpected happens to Lex Luthor in the Caves, something *really* unexpected happens to Simon Tam aboard Serenity
Thor by Drake of Dross
Summary: Cross-over with Firefly; response to Challenge #6, Welcome to my Fandom, Virgin!Lex