Pairing: Padmé Amidala/Anakin Skywalker, Jaina Solo/Kyp Durron
Fic Title: This Time Around
Why This Must Be Read:
I love time travel fics. I also love Jaina Solo from the Star Wars EU. So on the very rare occasion that I see a story which combines the two, I get ecstatic. This Time Around is as far as I'm aware the longest such fic around, and very enjoyable. [The absolute best quality Jaina time travel fic sadly appears to be abandoned so I won't rec it here, but if anyone's interested I'll find you the link.]
Essentially, the story is that the characters in the post-NJO era discover that Palpatine is not dead - and the only person who can kill him is Anakin Skywalker. So Jaina and Kyp volunteer to go back in time to change history by stopping Anakin's turn to the Dark Side so that he can kill Palpatine.
It is one of those stories which improves as you read. I think the author's skill has grown with practice. It's also regularly updated, with nice long chapters each time. It's one of those fics that makes me smile every time that I see a new chapter has been posted.