Fallout 3's new expansion, The Pitt, is fun, but it's initial distribution was a total clusterfuck.  After downloading the original version, apparently running it makes all the Anchorage content inaccessible.  They re-upped it, I followed the instructions to run it, but it still locked up three times until I deleted Anchoarage and The Pitt and then redownloaded them both.  I played it today, and it was fun, but they did a pretty terrible job of handling the whole situation with thier corrupted initial download.  I have wondered how people that aren't on the net a lot have possibly handled the situation, they must be calling Microsoft raising all kinds of hell.  It still isn't running flawless for me,  but at least it's playable.

Also, this expansion puts you in an extremely tough place morally.  The game prides itself on that sort of thing, but this one was tough for me.  I was left depressed after finishing it, and replaying it to do the other possible ending actually ended up striking me as worse.

-kHill