Christian seems fair enough. Also Christlike.
Socratic.
Platonic.
Homeric.
And the underused “Henrician,” which is a legitimately accepted term for the rule of Henry VIII despite Firefox’s spellchecker not recognizing it.
Euclidian
Cartesian
Smithsonian.
Whedonesque (although to be fair, I’ve not seen it used other than as the URL for his web site.
Not a person, but a group of people:
Pythonesque
lamarckian
mesmeric
Herculean
Jordanesque
Clintonian(I think. I know I’ve heard Clintonista. )
KlondikeGeoffesque
Pinteresque
Hitchcockian
Skinnerian.
Continuing in this vein:
Abelian
Noetherian
Artinian
Rovian.
Dunno if they qualify as adjectives, but there’s:
Borked
Russoed–ie, to completely abandon all semblance of logic when booking a wrestling program/promotion, to insult the audience, to destroy the 4th wall, and generally render the product in a fubar condition. See, e.g., World Championship Wrestling, demise of.
Those are clearly verbs, and quick Googling doesn’t seem to support the idea that the second one is in any widespread use.
It is in widespread use among wrestling fans of the internet variety, doubt any non-smartmark folks would be aware of or use the term.
Wait until a generation of writers grow up and then they will be described this way.
I’ll add:
Kubrickian
marxist
maoist
hitlerian
mohamedan
abrahamic
newtonian
Ptolemaic
Chauvinist
Napoleonic
Randian