Lemongrass and Lavender! 
Thanks to Heather Armstrong at Dooce.com, I have discovered the beautiful mix of the essential oils of Lemongrass and Lavender, a match made in heaven. The Lemongrass is definitely the bride - really stands out, the Lavender compliments and rounds out the Lemongrass. Plus, I've added a little sumpin' sumpin' to sweeten the blend up a bit.
So here's the story. After reading Heather's account of her lovely lotion in Lemongrass and Lavender fragrance, I decided to make my own. I love Lemongrass, don't love Lavender so much. So I started at half and half. Even at 50%, the Lemongrass totally dominated. So then I went back to smell the Lemongrass by itself - it now smelled bitter to me. So in other words, the Lavender absolutely makes the Lemongrass even better - a beautiful marriage!
This is a really lovely scent and is even better in a Soapourri perfume roll-on. However, in the roll-on, I did notice that the lemongrass fades in time, leaving an interesting sort of musky woody scent. Citrus will do that, you know. The women I've tested it on loved it and all are clamoring for more.
And yes, I did send some soap to Heather, my inspiration!