Noise Floor (Rarities: 1998–2005) is a compilation of previously recorded but unreleased or hard-to-find songs by Bright Eyes.
The compilation was released on CD and vinyl on October 24, 2006 on Saddle Creek Records. The vinyl version of the album includes five extra tracks not found on the CD. Unlike the cover pictured, sometimes the artwork consists of a case completely decorated in flowers, there is no text on the case, and the cover pictured is sometimes included over the other cover. The inlay includes lyrics and a personal comment from Conor Oberst for most songs. The entire album can be streamed at the Saddle Creek store website.