Well, I'm not sure how many of these names will ultimately be condemned to junior synonym or nomen dubium status but for me (unranked):
-The comic nerd in me loves Thanos simonattoi. I think it shows that scientists are people and we can do fun things.
-I love Brontomerus because it always draws a laugh or two from students.
-Othnielia & Drinker because they reflect the history of paleontology (at least in North America).
-Suskityrannus (just how it was named: the researchers asking permission from the local Tribe to incorporate part of their language, the word for "coyote" into this fossil name).
-And for non-dinosaurs, I love Ninjemys oweni.
We gotta have fun with our field.