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Bulletproof seems like it would be decently useful, albeit very situational unless I was visiting Detroit or something.
Forecast would be bizarre, but potentially interesting. Changing into elemental forms based on the weather seems cool.
Huge/Pure Power would be great for obvious reasons. Double the gains!
Immunity/Poison Heal, because being immune to poison or even healing from it seems pretty damn good.
Levitate, because it's the closest you could get to flight without further Pokemon powers.
Intimidate would be good if you were a boxer or some other kind of professional fighter.
No Guard sounds good on paper, in that you'd never be able to miss with a gun, but anyone who shot at you would never miss either, so it's a wash.
Wonder Guard would be broken if a baseline human counts as Normal-type.
Ultimately, I think I'll go with Speed Boost so I can become The Flash.