These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Academy Award
Award Snub: There will be uproars when people feels that a winner in a certain category didn't deserve it the most.
A more general complaint is that the Oscars rarely go to films which are technically innovative and artistically ambitious but rather are given to films which have sociopolitical sentimental and topical thrust.
When Life of Pi won the Oscar for Best Visual Effects, the people stepped on the podium to mention Rhythm & Hues going bankrupt. As they were getting into it, the Jaws theme started to play (a Running Gag for when speeches ran too long) and the microphone was cut off, which caused a lot of ire in the visual effects industry.
When Chris Rock hosted the 2004 ceremony, he joked about Jude Law being a low-rent Tom Cruise. Two hours later, Sean Penn made a defense that "Jude Law is one of our finest young actors".
Harsher in Hindsight: A bunch of young and upcoming Hollywood actors performed the "I Wanna Be An Oscar Winner" at the 1989 ceremony. Sadly, none of them won an Oscar to this day. But few of them did have successful careers in TV and theater and won Emmys (Chad Lowe and Ricky Lake), a Grammy (Blair Underwood) and a Tony (Savion Glover).
Russell Crowe and Denzel Washington went up against each other twice in the Best Actor category, with Denzel actually beating Crowe in 2001 for Training Day in an upset (Crowe had been the frontrunner for A Beautiful Mind). Fittingly, Crowe and Washington had played enemies in films both before and after these ceremonies, in Virtuosity (where Denzel had to stop Crowe's antagonist), and later in American Gangster (with Crowe as the detective trying to bring in Denzel).