Your picks for everything fannish

1) Sands of Time  by James and Wolfing: I can never describe how much this story means to me. It was the first fanfic I ever read. It holds a special place in my heart. It's Xander angst at its finest and I'm a huge Xander angst fan. I love the Xander/Giles relationship here, perhaps even more than the Xander/Spike relationship. I love the chapter about Giles' family and Xander meeting them for the first time. I also love the part where Xander tastes his father's blood on Spike's lips - so chilling! 

2) The Giles Thing by DrSquidlove: Another Xander fic I adore! It had probably the best portrayal of Xander's parents that I've ever seen in fics, and IMO the closest to the show's canon. The author writes the relationships between the characters so perfectly, and the characters' reaction to the relationship between Xander and Giles, especially Buffy and Joyce, was amazing. 

3) Cuckoo in the Nest by Liz-Marcs: Told completely from Tony Harris' unreliable narration! I loved watching the show through Xander's father's eyes! A wonderful character study.

4) Sidelines by Anna S: The perfect "What if Xander was the gay Scooby instead of Willow" fic! 

5) Late Night Double Feature by Kimberly A: The sequel for Just a Jump to the Left which I adore because it's the closest of an unrequited love story where Xander is in love with Spike while Spike is oblivious that I can find! Xander faces the consequences of the time loop in the previous fic, and realizes that making changes in his relationship with Spike isn't quite as easy as he'd like.