With their fine features, blond hair and green eyes, Jensen Ackles and Sarah Michelle Gellar would be perfect as Lannisters.
 

Since the Cylons of Battlestar Galactica have the ability to manufacture hordes of living humanoid bodies with no consciousness in them, they would be able to peacefully solve the host body problems of the Animorphs Yeerks or the food source problems of the Stargate Atlantis Wraith.

If the Final Five were Magic cards, their mana costs would be:

Sam Anders - WWG
Ellen Tigh - GGR
Saul Tigh - RRB
Tory Foster - BBU
Galen Tyrol - UUW

The perfect theme music for John Cavil's interactions with the Final Five is "I Can't Decide Whether You Should Live or Die", by the Scissor Sisters.