The Weather Channel’s Poor Use of Ad Placement

Lately I’ve been seen an increasing amount of Flash ads which escape from the confines of the traditional ad box. You’ve seen the ads, a car driving over your text, stops, flashes it’s lights and encourages you to click for more information.

Most of the ads I’ve seen can be worked around; however the latest ad from the weather channel takes the cake. (View it here)  This page is vertically oriented, forcing most users to scroll. Upon moving from the left to the right across the ad, the ad to expands until the mouse reaches the browser scroll bar. Upon return from right to left the ad then again blocks the content before fully contracting. This might be one of the worst ad placements I can think of. Perhaps this ad would be better served on the left side of the screen away from the users interaction with the browsers navigation system.
Has anyone else found ads which hinder website usability?