Classes I hate, in approximate order: discrete math esp. COMBINATORICS, econometrics, any Literature, statistics, marketing, English, political "science," management, "sociology," "environmental" classes, art
Indifferent: psychology, Computer Sci., music, thermodynamics (I like it but so far I suck at it)
Classes I love: Linear Algebra, Diff. Eq and PDE's, Calculus, Complex Analysis (although it blew my mind), Nuclear Engineering, Physics, Chemistry, Economics, History (don't like the attitudes of the profs though)
Classes I have yet to experience: Real Analysis, Functional Analysis, Abstract Algebra, modern physics, numerical analysis, nuclear reactor physics, plasma physics, organic/inorganic/physical chemistry, differential geometry, topology, knot theory (sounds awesome)