Making a mental note to read Out in the Cold, don’t know how I haven’t got round to it yet.
I haven’t read very much decent comedy, but here’s a few good ones:
> The Elements of Awesomery (highly recommended)
> The Vinyl Scratch Tapes
> Double Rainbow
> Do You Really Want to Know? (For some reason it’s only tagged as ‘shipping’ with Equestria Daily, despite it not really being a ship-fic in the usual sense)
I should really try harder to avoid the sad fics, they always put me in a bad mood for hours afterwards. But, since you asked:
> Blood, Sweat and Tears
> Today, Tomorrow and Forever (Brace yourself for this one)
> You can’t be missed if you never left (WARNING: May contain dangerous amounts of TwiDash)
> Dinky doesn’t go to school (the ending’s a bit stupid but it’s good until that point)
> Simply Rarity
Most of these are already quite renowned, so I know there’s a chance you’ve already read them. Most of them are quite short too, since most of the longer fics tend to be based around some sort of adventure scenario. Hope I helped!
EDIT: Crap, how did I forget Past Sins? That has to contain some of the saddest scenes I’ve ever read in fanficiton (or fiction in general for that matter)