Walking in Seattle has a survey addressing the perennial Seattle pedestrian question: What's the worst intersection, for pedestrians and cyclists in Seattle?

You'll find the whole list at the link, but here are my top three votes, plus one that isn't on the list:

Aurora and cross streets Republican, Harrison, Thomas, and John – “These intersections all suck for not existing, pedestrian-speaking. We have enough geographic barriers to movement in this town, we don’t need to create our own with concrete.” (nominated by Hans) [...]

Eastlake NE and Fuhrman E – “ear-crushing noise off I5, car drivers rushing to turn off or onto the University Bridge, which often means navigating around a ‘oh hey a pedestrian’ car stopped across the pedestrian walkway, which pushes you out into the Bicycle Lane, who in turn have their own troubles with cars failing to yield.” (nominated by Jeremy Mates) [...]

Fairview and Eastlake – “The sidewalk vanishes into a parking lot. The parking lot itself is barely distinguishable from the road when it isn’t filled with cars.” (nominated by NJL)

Most of the nominees on the list are in the North End or near downtown (which makes sense, considering that traffic congestion tends to be highest downtown). However, I'd add one South End intersection to the nominees: MLK and Rainier Ave. S., where most people jaywalk instead of traversing the convoluted pedestrian overpass which is the only safe route between the Mount Baker Transit Center (and Franklin High School) and Sound Transit's Mount Baker light rail station.