Pairing: Rose Tyler/The Doctor, Others
Fic Title: The Blonde Girl, Defender of Earth, The Companion Connection, Time and the Trickster
Rating/Warning(s): PG-PG13, spoilers for most of the ENTIRE series. Violence.
Genre: Retelling, action/adventure, AU, romance, friendship, sci-fi.
WIP?: The first three stories are complete, and the last one is updated regularly!
Why This Must Be Read: Not only are all these stories epic and very well written, it's an amazing alternate backstory for Rose that draws in the Doctor's other companions. It's Rose-centric and is chuck full of friendships, UNIT, companions, various forms of the Doctor, alien invasions, and running for your life. But the shining star in this is Rose. Her evolution and life, and the way that she's just fantastic. Plus, the author's promised at least three more "seasons" (giant-sized stories like The Companion Connection) and considering her earlier work, I believe her.
ETA: Updated 11/19/2012.