See, I come from a track and field background, so when I think high jump, I think of measuring over what height you can get your body. See, for example, this.
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Dust of Sneezing and Choking. 5d4 round stun, no save. That *really* can't be functioning as intended.
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EDIT: Though actually, you know, reading the link you provided would show me that no, D&D's high jumps are treated differently. Not my fault I figured barbarian would be more useful for it's extra move speed in track... silly tradeoff of being unable to read gets me far too often...
Still, dunking a basketball is like a DC 8-9 jump check for an average human? Wow.