I've got tires with reflective sidewall on two of my bikes.

The best are Panaracers, because they have a six-inch section on each sidewall that is not reflective -- this means that a driver sees not only the distinctive circle of a bicycle wheel but one that is rolling around.

The other are Michelins.

Flash a beam on either of these tires with reflective sidewalls and they really light up. I strongly recommend them.

I'm surprised reflecto-tires are not standard on commuting rigs, but mine are the only ones I see in my town -- but then, there are few commuters where I live.