Well if this is a request thread then I have a request.
Star Trek Enterprise set around the mid point of season 2. The Enterprise is at warp when they detect some slightly strange readings from a nearby nebula. They stop to investigate and when they enter the nebula they find a powered down Sovereign class starship.
The crew do a scan and find they cannot penetrate the hull but they see the markings of USS Sovereign (or another name) which confuses them greatly. Archer organises a boarding party to see what is happening and when they get on board they find the ship with very little damage but completely empty.
Basically I am wondering with the idea what would happen if Earth suddenly aquired technology hundreds of years more advanced than another else in their area of space and what would happen when they managed to get the USS Sovereign working and took it back to Earth for study.