Draw You As You Truly Are - Teamfic told through flashbacks from the future. Lots of feels and all canon couples (Tony/Pepper, Bruce/Betty, Thor/Jane).
Responsible Science series: A Fine Spur, The Hollow Men, Keep Your Splendid, Silent Sun - Bruce centric. The first one's just Bruce and Natasha. The second one is Bruce & Steve. The third one is more of an ensemble-ish fic. The latter two are also marked Bruce/Steve actually but I personally didn't get any slashy feelings reading through so either it's a mis-tag or the author is a little too understated in the subtext.
Affinity series - series of short fics with interactions between some of the Avengers