* AwardSnub: Not so much award snub as recognition snub; at the 2014 Grammy Awards Jeff Hanneman was not included in the "In Memoriam" montage that pays tribute to musicians who had died in the previous year. What makes it even more frustrating is that Jeff had been the recipient of two Grammy awards in the decade before his death. [[InternetBackdraft Naturally, this snub did not sit well with metal fans.]]
* AwesomeMusic: Most of the band's output up to and including ''Seasons in the Abyss'', at the very least. The music after that gets a bit more... controversial, although ''Divine Intervention'' and ''Undisputed Attitude'' at least are still generally regarded as worthwhile.
** "Angel of Death" is definitely the icing on the cake. 5 minutes of pure, relentless ThrashMetal.
* BrokenBase: Two kinds:
** The fast, thrashing riffs of ''Reign in Blood'' or the slower, heavier songs of ''South of Heaven''? ''Reign In Blood'' is either the band's best album or their JumpingTheShark moment depending on who you ask, with a VocalMinority of the fans preferring the EpicRocking style of ''Hell Awaits''.
** And then, there are those who feel the band jumped the shark when Paul Bostaph was hired as their drummer and, particularly, when 1998's NuMetal influenced ''Diabolus In Musica'' was released. ''God Hates Us All'' is similarly polarizing, with many going as far as to say that the album was even worse than Diabolus (although it did give the band their first ever Grammy nomination with "Disciple"). Fortunately, 2006's ''Christ Illusion'' and 2009's ''World Painted Blood'' mostly rectified this by shedding the NuMetal influences and returning to the band's thrash metal roots.
* ComplainingAboutShowsYouDontWatch: The songs "Angel of Death" and "Jihad" take the point of view of a certain individual (Dr. Josef Mengele and a Muslim terrorist, respectively) and have had many people say that Slayer sympathizes with them. However, anybody who has read the lyrics can tell that they are not sympathetic towards them. The band wrote the song "SS-3" [[TakeThat specifically to annoy religious groups.]] In fact, during the 90's Slayer used a variation of the Nazi ''Reichsadler'' (replacing the swastika with the band's name) specifically to gain attention.
** When asked about "Angel of Death", Hannemann said "nothing I put in the lyrics that says necessarily he was a bad man, because to me well, isn't that obvious? I shouldn't have to tell you that."
* DorkAge: The Paul Bostaph period is seen as this by some. ''Diabolus In Musica'', in particular, takes a lot of heat for its obvious nu-metal influence.
* EpicRiff: "Raining Blood"
** Tons of them, really. "Raining Blood" is just the most obvious.
* EvilIsCool: Hence why most of their songs are about Satan, Nazis, serial killers, terrorists, etc.
* FaceOfTheBand: Kerry King, specially for its tattooed and {{bald|OfAwesome}} looks.
* HarsherInHindsight: Because of various issues, the release of ''God Hates Us All'' was delayed until September 11, 2001.
* MagnumOpus: Generally considered to be ''Reign in Blood'', although opinions vary and some consider it their JumpingTheShark moment. ''Hell Awaits'' and ''South of Heaven'' are also quite well regarded; there is a small but vocal minority that considers ''Hell Awaits'' to be the band's finest work.
** Some fans consider ''Seasons In The Abyss'' to be Slayer's best album.
* MemeticMutation: [[http://www.youtube.com/watch?v=V9R3_cS6jsk HEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLL!!!!!!!!!!!!!(?)]]
** VIVA CHILE MIERDA!! (go watch the Big Four DVD/blu-ray if you don't get it. Besides, you probably need to be Chilean in order to really get all Memetic about it)
** Tom's signature MetalScream, to the point it has its own [[http://tomarayascream.com/ website]], with a button that plays his opening to "Angel of Death."
* MostWonderfulSound: One thing that everyone agrees on is that Tom Araya's epic scream in "Angel of Death" is truly epic.
* NeverLiveItDown: The band [[OldShame aren't too fond of being reminded]] how they used to wear eyeliner when they were starting out. Particularly [[HilariousInHindsight amusing]] given some of the infamous homophobic remarks Kerry King has made in interview over the years.
** On a musical level, the NuMetal-influenced ''Diabolus in Musica'' and ''God Hates Us All'' will never be forgiven by some fans. Even King isn't a fan of ''Diabolus''.
* UnfortunateImplications: Some people took offense when ''God Hates Us All'' was released on...September 11, 2001. The band, however, had no control over this; it was just a "New Release Tuesday," with their album at least [[Music/DreamTheater not getting pulled]]. No one could have predicted the events of September 11 and the release date was probably determined weeks, if not, months in advance.
* WereStillRelevantDammit: This trope was one of the main criticisms people had with ''God Hates Us All''. The album contained quite a few [[ClusterFBomb Cluster F Bombs]] (which were, until then, a rarity in Slayer's music), similarly forced screaming in parts, and the same NuMetal influence that permeated their prior album. Not to mention a pointless picture in the album booklet of a Bible with nails and the band name burned into it, which was clearly done for no reason other than to prove that they could still be "edgy" in the age of more extreme bands like ''Music/{{Mayhem}}'' and ''Music/{{Nile}}''.