http://www.jagged.nu/spike/fans/index.php?x=quiz.html
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"You're a very elegant and refined person, and you see beauty in everything. However, you tend to see life on the pessimistic side - There is an air of mystery and sadness about you, which attracts people like magnets to iron. You can take care of yourself and other people, and prefer to solve your own problems rather than dumping them on others. And even though you may make some bad choices, you're still deeply loyal to those you love.
A spoiler-filled explanation: For those of you complaining that Julia barely got any screen time and wondering how I know what her personality is like, here's my reasoning. A lot can be inferred about Julia from looking about other women that Spike is attracted to in the series (namely Electra) and picking out the specific qualities that he liked in them. Sure, Julia doesn't get much screen time - but she is often mentioned, and her influence is visible in the personalities of both Spike and Vicious."
Hmm. Interesante.