The Chosen Ones - not a specific adventure but a concept for modifying an existing adventure. The PCs are thrown into an adventure that they would usually be woefully underleveled for, however as luck would have it they are the chosen ones destined to resolve this particular problem. As a result of this, in any encounter directly related to the problem at hand the PCs (and only the PCs) deal double damage and take half damage, and save as if they were twice their level, while conversely enemies save as if those enemies' levels were halved. The PCs also treat all their skills as if they had double ranks when dealing with relevant tasks. Essentially for the purpose of this one specific situation the PCs act as if they had double the levels and/or the enemy had half the levels. But they'll still get their asses handed to them if they make trouble unrelated to their destined quest because they don;t get the buff there; I got the idea from a discussion I was in about why the city would need the PCs to handle these problems if the guard were strong enough to keep the PCs in line. Also, you shoukd include some characters who would otherwise be tougher than the PCs in some battles with the villains to hammer it home how the PCs have special power over the villains
