Bell has a line of inexpensive helmets designed for commuting, called the Metro. They aren't ugly, for a helmet! (note: the visor is removable)
They say it is designed to blend with your street clothes. It is true that the softer lines look more natural for everyday.
It seems you you can attach your favorite blinkie light to the flasher strap, and it has the harness that adjusts to your head. It is vented for cooling but you can add the optional winter kit to plug the vents for comfortable cool weather riding.
They're on sale at Nashbar, models from '04, '05, and '06 in an assortment of colors. I just happen to gravitate to the blues, but there is a pretty fuschia, and a nice matte black.
I think think I need this helmet.
