Forget Me Not by SGC Gategirl
Stargate SG-1 | Season 4 | Long novel, complete

SG-1 return from a seemingly peaceful planet with altered memories and a member missing.

Echoes of Autumn by Moonshayde
Stargate SG-1 | Season 8 | Novel, complete

Jack wakes up ten years into an unpleasant future, with no recollection of how he got there.

Leavenworth by Kazza
Stargate SG-1 | Season 6 | Novella, complete

Jack is sent to prison for a murder he has no memory of committing.

Roses in December by Rheanna
Stargate SG-1 | Seasons 1-2 | Novella, complete

After a visit to an icy planet, Jack begins to experience odd gaps in his memory.

Siege by Seanchaidh
Stargate SG-1 | Seasons 4-5 | Novella, complete

Aksel and Mladen are brothers and simple shepherds. Or so they think, until some odd dreams and memories seem to say otherwise.

Friend or Foe by Jackjunkie
Stargate SG-1 | Season 2 | Novelette, complete

Daniel and Teal'c are captured and have their memories altered.

The Knife's Edge of Madness by Strix Varia
Stargate SG-1 | Season 5 | Novelette, complete

Alternate ending to "Desperate Measures"; Sam escapes on her own, but before she can get back to the SGC she's caught in a terrible accident.