I got tired of having to press shift every time i wanted to write a parenthesis. So I used a US keyboard and swapped the top row so I now have to press shift for numbers instead; like the french AZERTY keyboard. I takes a second to learn and is so much nicer to use.

It has ÅÄÖ with the swedish layout. They are reached through altgr-{normal position}.

Summarized: It is a better keyboard layout for programming.

More information here: http://code.google.com/p/keyboard1337/w/list

The Microsoft keyboard layout generating program is here: http://www.microsoft.com/download/en/confirmation.aspx?id=22339