U

• Undead (Buffy/Torchwood) by JadesFire
• Under the Skin (Doctor Who) by HonorH
• To Do (6) The Undiscovered Country (Sentinel) by Aubrey Robin
• Undivided Universe (Sentinel) by Elizabeth Clarke
• Unexpected Mission (Sentinel) by Gemini
• Unless You're Us (Buffy/Star Trek) by Kathleen Dailey
• Unravelling Time (Highlander/Doctor Who) by Settiai
• Unsleeping (Sentinel) by Martha
• Untitled (Matrix (Movie)/X-Files) by Axianna
• Untitled Snow White Fanfic (Snow White) by Singingrain5
  An AU fic in which the dwarfs did arrive in time to save Snow White, but were unable to capture the Queen. Grumpy and Snow deal with the aftermath.
• The Unveiled Secret (Star Trek: Reboot) by Laurajv
  "What was silent in the father speaks in the son, and often I found in the son the unveiled secret of the father."
• Up in the Valley, Down on the Mountain (Highlander/Narnia) by Amand-r
• Upon A Time (Doctor Who) by AstroGirl