Todd Howard is the Executive Producer and Game Director at Bethesda Softworks, and is the highest ranking person at the company who works on their games themselves. Above him are a whole host of people who deal with the business side of the company.
Todd Howard made the big decisions regarding Fallout 3: how the combat was built, what the viewpoint was like, and so on.
Howard has spent over a decade in the video game industry. Having been educated at the College of William and Mary in Virginia he joined the fledgling Bethesda game development studio in 1994. One of Howard's first assignments was to work on the first Elder Scrolls game : Elder Scrolls: Arena by making the game from a floppy disk, to a CD. Over the years he continued to contribute to various titles, and is currently Executive Producer of the Elder Scrolls series, and of Fallout 3. Howard has commented that he intends to avoid inclusion of mindless filler in any of Bethesda's games, especially Oblivion, something that he admits has happened in the past - saying that despite the fact each game is the previous one's sequel, total reinvention is the prerogative.
His major credits include being project leader and designer of Morrowind, design on Daggerfall, Producer and designer of The Terminator: Future Shock and SkyNET. He was also the project leader and designer of The Elder Scrolls Adventures: Redguard.