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.
Pink Martini doing "Que Sera Sera" as George has to learn that she can't prevent people (a little girl) from dying. "Whatever will be, will be..."
"Hell" by the Squirrel Nut Zippers is used to great effect during several scenes in the pilot.
"Boom Boom Ba", the song used in various episodes and the last scene of Life After Death.
"Nomah's Land", played as a transgendered reap rants against God.
Harsher in Hindsight: Bryan Fuller has stated that all of his shows take place in the same universe. This has some nasty implications for Dead Like Me after Ellen Muth guest-starred on Hannibal, playing a woman named Georgia who suffers from a mental illness that makes her think she's dead and drives her to kill people.
It could also be the fact that they took a whole season's worth of growth and development for Daisy, and casually flushed it. She went from becoming a rather introspective and interesting woman to a diva with all the depth of a puddle all over again.
Also, she, Mason, and Roxy appear to be written by someone who'd never seen the show and was only given brief character sketches.
Values Dissonance: George's complaints about her job aren't very sympathetic anymore, considering she actually has a job despite only having "some college" on her resume.