|The Drunken Dragon|
I've always liked the idea that the somatic components are dramatic. Not like ninja-esque hand-signs or anything like that, but more like....hm...more like slow-motion martial arts. Or like a conductor leading an orchestra. Except in this case, what you are conducting is not a band but rather the very basic forces of the universe. I imagine, and sometimes describe, the body language intent. If you're casting a fireball, you'd thrust a hand forward in the direction of the attack, a look of wild fury on your features (for fire, like anger, is all-consuming and is often colloquially referred to as "burning").
Of course, I also like the whole "runes around the hands" thing Paizo art draws out, though I imagine the runes not to be a flat disk of magic runes, but rather a long pale stream of letters that slowly revolve around the hands in a snake-like pattern, the color varying caster to caster, and sometimes spell to spell.
I've always toyed with having a character that recites a small poem for their verbal component, like a short haiku or something along those lines. But my creativity is not good enough for me to do this in its entirety, so I've never tried.