So Trulia has incorporated Google maps’ Street view into their listings. Here’s an example from a listing in Portland. It’s not exactly a tour of the home. In fact, you can hardly see the home from the street, but it does give you an opportunity to tour the neighborhood without driving to it.
I’m sure that Trulia would like to have a street view for Eugene as well. Unfortunately Google has focused almost all of its Oregon-based Street View photography efforts on Portland, as you can see from this map. If that changes, and Eugene gets Street View images, you will be the first to know!