You can find some good information here:
https://bitcointalk.org/index.php?topic=83794.0Last updated: December 26, 2012.
Following is the result of some research on prior Bitcoin large thefts (as of now, defined as over one thousand bitcoins) . . .
Pirate40 (also known as Trendon Shavers) is not included in the "lists", but is discussed a bit later in the same post. Other than that, this seems to be a pretty complete list of all known large scale scams/thefts.
Cool thanks.