Relient K is the first full-length album released by Christian rock group Relient K. Many of the tracks are newer versions of those found on their 1998 demo All Work & No Play. Typical of early Relient K albums, the lyrics use pop culture references for teaching and to illustrate Biblical principles. As of late 2006/early 2007, this album has sold around 400,000 copies.
At the end of "Hello McFly", Toby McKeehan (tobyMac) calls Matt Thiessen, telling him that a song about Marilyn Manson will never be on a CD put out by Gotee Records (the call is followed by "My Girlfriend", a song about Marilyn Manson). McKeehan is the president of Gotee Records, and the one who signed Relient K to a record deal after hearing their demo.
The hidden track after "K Car" is entitled "Punk Rock Picnic" - Relient K's "Call Us Rock Stars" with various quotes dubbed over and then music from a polka concert at the end.
The song "anchorage" is the only Relient K song to begin with a lowercase letter, and is the first Relient K song that has absolutely no vocals.
Pre-release copies of the album feature a short track called "Ed Sullivan" which was excluded from the release version, likely due to licensing issues, as it is in fact a brief parody of the same song from the film Bye Bye Birdie.
In the song "K Car", there's a line that says "And Brandon Ebel just gave us a call". Brandon Ebel is the founder of the Christian record label Tooth & Nail Records.
At the end of the polka music that makes up the second half of the hidden track, the man playing that just finished playing the polka music asks the audience if they've heard his song on the radio about the Cleveland Browns. It also features a recording of a Reliant K starting up in the intro.