Another really good one is Burden of Conscience by Raconteur. In a single moment, a hero is destroyed, a friendship is torn apart, and a partnership is broken. Clark has to struggle with the burdens that defeated a Superman and Lois learns that there's no way to save someone unless they want to be saved.

It deals with some fairly heavy duty issues and is a serious tearjerker. I recommend having some tissues handy while reading. That said, it's well-written and engaging and has been on my personal favourites list for a while now.

"It means never having to play it cool about how much you like something. It's basically a license to proudly emote on a somewhat childish level rather than behave like a supposed adult. Being a geek is extremely liberating."- Simon Pegg