As my wife says: "Helmets are sexier than head injuries". I'd have to agree and state they are more comfortable as well.

Giro Hex - nice venting and doesn't look like I'm tryin' to be Lance.

About $30

I'll replace it when Giro will stop sending me new pads... I go through them like crazy. I'm looking into a multi-sport helmet for commuting though.

Those who use multi-sport helmets; what made you go this route? Aesthetics? Function? Comfort? Price? They look a bit more durable as far as day to day scratches and the like go. Do they vent decently? I don't worry about aerodynamics at all, and hate the way heavily vented helmets look, but I sure do like the airflow when the temps break 100F for weeks on end with high humidity.