But prior to that, Stevens was more likely to make headlines for his at times temperamental outbursts on the Senate floor or his comment back in 2006 likening the Internet to a series of tubes.

NPR: Facing Indictment, Sen. Stevens Claims Innocence

Ted "A Series Of Tubes" Stevens is at it again: The senior U.S. senator from Alaska has introduced Senate Bill 49, a lovely bit of legislation that would require federally subsidized schools and libraries to block access to interactive Web sites--a definition so broad it could affect everything from MySpace to Wikipedia to this blog...

FORBES: Magazine Article

It is a cancer of the lymphatic system, which is a part of the immune system that consists of a series of ducts or tubes that parallel the arteries and veins throughout the body.

CNN: What is Hodgkin lymphoma's effect on the lymphatic system?