- Broken Base: Jupiter. Some people see it as a solid, no-frills comeback that does a good job at mixing in elements from all three of their studio albums, while others see it as a pile of horribly produced garbage that relies solely on the name attached to it to get by. And then there are people who think it's a solid album despite being horribly produced.
- Crowning Music of Awesome - While most of the band's output since Piece of Time qualifies, a few songs in particular stand out, such as Mineral, Enthralled in Essence, and Your Life's Retribution
- Fandom Rivalry - While very few people dislike either band, Atheist vs Cynic wars are not unknown. They're pretty tame compared to most fights over metal, but they can get fairly heated at times.
- Fridge Brilliance - Atheist's second album is called Unquestionable Presence. Think about it.
- Magnum Opus: Unquestionable Presence is probably most frequently cited as this.
- Replacement Scrappy - Decisively averted with Tony Choy. While most fans liked Roger Patterson better, Choy isn't disliked by many of them, partially because he was just a session member, but also because he happens to be a really good jazz fusion musician.
- Not entirely; there are a LOT of people who see Choy as decidedly inferior to Patterson both in terms of songwriting and style. No one's going to debate that he's an excellent musician, just that Roger's far more aggressive and frantic playing style was both more interesting and lended itself to better songwriting.
- Seinfeld Is Unfunny - Compared to Gojira, Meshuggah, Suffocation, Origin, or Obscura-era Gorguts, it's hard to see just how innovative and unusual Atheist was at the time, though even in that context it's easy to like the band.
- Tear Jerker - Kelly's account of the night of Roger's death; it can be read in the remastered Unquestionable Presence album booklet.
- What Do You Mean, It Wasn't Made on Drugs?: Actually, Kelly confirmed that Unquestionable Presence was written while under the influence of copious quantities of weed.