I thought the character Sabrina was pretty shallow.
Falling in love so easy... In the case of Linus, it happened only a few days after a couple of pamperings accompanied by Bogart's own bad performance. I almost thought it was plothole when she hadn't even yet recognized his plan until explained.
Despite the depth of her character, Hepburn was very good in terms of portraying aspects of Sabrina by ways of movements and interactions, thus making her interesting enough to continue seeing. Holden was very good too. The cinematography and the direction were splendidly done.
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My Top Animated: http://www.imdb.com/list/zyDiSPMGtuM/