Fallout 3 Expansion Pack: Operation Anchorage & The Pitt

The Combo of Operation Anchorage & The Pitt add ons in this disk are a real steal, especially if it is not possible for you to download them.
Operation Anchorage gives you a fallout history lesson in the form of a simulator quest for a faction of the Brotherhood of Steel. The action itself is fairly linear, but the locations are different from anything you've seen so far in Fallout. There are some fairly nice rewards at the end of this quest too.
The Pitt ramps up the action quite a bit more, gives you more freedom, and makes you more vulnerable, making for some exciting gaming. The Pitt is very repressive and your decisions are not necessarily right or wrong. Top stuff and highly recommended.