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.
I Am Not Shazam: Occasionally one finds people on the internet who think Max goes by the name "Dark Angel". She doesn't. It's a reference to her dark past, dark complexion, angelic features, and job as a bike messenger.
"Angel" because from the pilot onwards she becomes a (beautiful female) hero to the downtrodden, and "Dark" because she has bleak past as a government-engineered super-soldier/assassin, and a somewhat dubious present as a part-time cat burglar, and not of the Robin Hood variety.
The angel - messenger connection is made explicit in "Art Attack" when she prevents a man from committing suicide and introduces herself as a messenger, which he thinks means "of the Lord".
Just Here for Godzilla: Many people on forums confess to only watching for Jensen Ackles. Unfortunately, this usually means they watch only "Pollo Loco" and Season Two and thus don't appreciate that Season One is also good.
Both Sky1 and SyFy in the UK (when it was still Sci-Fi) implied in their trailers that the main reason to be watching was Jessica Alba. This proved to be the case for a lot of people (and unlike Jensen Ackles, she appears in every single episode).
Max swinging down like Tarzan in the Die Hard on an X episode "Prodigy" and catching Logan as he's thrown off a roof.
"Female Trouble" is basically made of Awesome (and one of the few episodes not to have a Downer / Bittersweet Ending), but especially Max blowing Lydecker a kiss as she jumps over him on her motorcycle.
Gem, the pregnant X5 in the Series Finale "Freak Nation," gets one of her own during the climactic siege at Jam Pony; one of the villains crashes next to her and she lays the baddie out with one punch... in the middle of her giving birth.