My screenname shows my geeky side, I guess.
Like grantaire's, mine came from a work of literature as well. In Homer's "The Odyssey", Nausicaa is the Phaeacian princess who saves a shipwrecked Odysseus. The Phaeacians (like many coastal peoples, I guess?) are a laid-back lot, fond of song and dance. Not too much is said of Nausicaa, except that she is young and lovely, delights in nature, and is not one of those simpering sissies who shies away from blood and the sight of a naked man (Odysseus is both naked and bloody when he washes up on shore, y'know.)
I dunno...I just found the image of a this simple, unpretentious princess living in an idyllic land to be compelling - especially since "The Odyssey" is chock-full of bloodshed, intrigue, wrathful gods, helpless men and cruel monsters (parallels to the real world? I wonder.) I think there's a reason why Homer has Odysseus being rescued by the Phaeacians...they provide a brief respite from it all, I guess.
Oh, and by choosing nausicaa as my screenname, I'm also paying homage to one of the greatest animators of all time - Hayao Miyazaki. In his futuristic film "Nausicaa of the Valley of the Wind", the title character Nausicaa is a princess-warrior who is forced into an ecological war, in order to save her meagre kingdom (called "The Valley of the Wind") from being devoured by the vast forest of fungi and plants that give off poisonous gases (called "The Sea of Corruption").
She is also a pilot who glides on a jet-powered glider (called a "seagull"). Damn cool girl, IMO.