Muchas Gracias: The Best of Kyussis acompilation albumby Americanstoner rockbandKyuss, released in 2000 throughElektra Records. Although promoted as a "best of" album, it features mostly rare tracks andB-sidesand includes only five tracks from the band's four studio albums. The final four tracks are live recordings from a May 24, 1994 performance inHamburg, previously released as theLive at Marquee ClubEPwhich was included with the first 3,000 copies of the band's 1994 albumWelcome to Sky Valleyreleased in Germany and Australia; the tracks were also included on various editions of the "Demon Cleaner" single that same year. This is the first time this collection has been issued on vinyl in North America.