ObeseMan
v1.0
by Nekhanimal

http://www.newvegasnexus.com/downloads/file.php?id=38508

This mod makes the Fat Man explosion 8.104 times more powerful, which amounts to 1337 points of damage.

For a second there I thought this was literally a mod about an obese man.

Bethesda doesn't like making fat people in their games.

And I suppose Obsidian wasn't able to with the tools they were given.

(aside: http://www.youtube.com/watch?v=6TQO8JBxn_E, although not necessarily possible at pro-quality)

The real killer problem I had with the Fatman was the horrible lack of ammo. I found more Fat Men than mininukes, and that kind of renders it pointless.