Alchenist:
1) homunculist/protean alchemist.
2) Vivisectionist alchemist
3) Master Chymist
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While I love the idea of an alchemist being built to mix compounds that go boom, I adore the idea of a mad (medical) scientist.
The Dr. Frankenstein and Dr. Jekyll fantasy!
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Bard
4) Arrowsong minstrel
5) Brazen deceiver
For bards, it's cool to have a martially inclined option. For Arrowsong, it's a fun Gish build where you borrow power from foes
For brazen deceiver, it's hilariously fun to be supernaturally good at lying and misdirecting foes in combat.