PS: a quick update....
I replaced my dead diver's side low beam in late Oct 2010. My passenger side went out now - 2 months after to be precise.

It's been just under 5 years that I've owned this car and I find it eerie that the lifeline on these bulbs is almost identical. It's the first time I change either bulb since I bought the car. I'm not sure if it's coincidence or just how these things are manufactured. Whichever, I think it's amazing these lights lasted 5 yrs. I never had the same luck with the damn foggies though. I jump to change them when the cap pops of, but I haven't done that in over a year because both fog lights work fine without them (and the darn things cost a heap to replace)