I'm currently playing a Warforged Healer in NarlethDrider's PbP.
I admit the core concept was the "reverse artificer" -- instead of a guy with a knack for repairing constructs, a construct with a knack for healing people.
Oddly enough, gnomes IMC are far more likely to be monks than bards. You know, with their racial ability with illusions, they were IMO more likely than other people to come up with pseudobuddhist philosophies like "everything's just an illusion, learn to see through" and all that. Besides, they are a very wise race IMC.
Re: Aasimar Wizard, there's one in Shemeska's story hour (and it is one of the PCs).
In my homebrew campaign world, here are the most unlikely combos for each (PHB) races and classes:
Dwarf: Sorcerer
Elf: Paladin
Gnome: Barbarian
Halfling: Cleric
Human: Druid
And now, the three most likely combos for each (keeping the same core limitations):
Dwarf: Fighter, Cleric, Paladin
Elf: Barbarian, Cleric, Rogue (the elven arcane tradition IMC is the Elementalist -- a.k.a. Wu Jen in D&D terms)
Gnome: Druid, Wizard, Monk
Halfling: Rogue, Bard, Ranger
Human: Fighter, Rogue, Cleric
If I broaden it to the full spectrum of classes I use, there are a few changes. Dwarves are more likely to be runethanes than paladins, elves to be wu jens than cleric, etc.