Uri Kalish has a marquee version of the full Atheist Blogroll working on his blog, I also have it running on the bottom on the right . The Marquee version will scroll all 220+ blogs in a smaller window at the speed you desire. The code for this cool modification was provided by Uri Kalish and is available for download here.
Uri would like me to point out that the user can adjust the attributes (width, height, scrollamount, scrolldelay) to suit their taste.
Many thanks Uri!