Have you ever used Picnik (http://www.picnik.com/) to edit photos before? It's a lot of fun, and I've been playing around with it the last couple of days using photos from my sister's wedding. I think my favorite features are the 1960's effect ( I like anything vintag-y and old) and the lomo-ish effect, which simultaneously seems to brighten and darken the photo.
A few of my (very amateur) favorites:
A few of my (very amateur) favorites:
