K-9 is a British/Australian comedy/adventure series focusing on the adventures of the robot dog K-9 from the television show Doctor Who, achieved by mixing computer animation and live action. The first episode aired as a sneak preview of the series on Halloween 2009 on satellite channel Disney XD in the UK & Ireland. As of October 2010, the full series has commenced airing on Network Ten in Australia, Disney XD in the UK & Ireland; Scandinavia, Poland, Italy and The Netherlands and Disney Channel CEE in Bulgaria, Romania, Moldava, Slovakia, Hungary and The Czech Republic. In the UK, Channel 5 broadcast the first season between December 2010 and April 2011. The US cable channel Syfy began airing the series on 25 December 2012, initially by broadcasting the entire first season in an all-day marathon.

The show features some great light and sound effects apart from the great music that Eagles is renowned for. The 'five-part' harmony song, "Hole in the World" elicits a great crowd participation with the audience providing a 'clap rhythm' as the band sings. The song "Life's Been Good" features some antics by Joe Walsh and Frey with them staging a mock rivalry on stage and the latter having a hearty laugh at the former. The song also features a 'helmet cam' session where the crowd gets to see what the camera on Walsh's helmet points at. Also, the songs "The Boys of Summer" and "Hotel California" feature the first officially documented use by the Eagles of a drum machine in a live performance; in particular, during "Hotel California", a pre-programmed track is used to simulate the muted guitar strums which provide a steady beat on the original studio recording of the song, and which are absent from all of the previous live performances of it.