Scarlet Tanager (Piranga olivacea) is one of my favorite birds of all time (North America).
Just a quick reference for websites I use to help identify birds. These are great tools when you have identified a few characteristics, but you either don't have the references or time to page through a bunch of bird guide books.
The Indigo Bunting (Passerina cyanea) is another of my North American favorites.
WhatBird.com (scroll down to the "attributes" section): http://identify.whatbird.com/mwg/_/0/attrs.aspx
AllAboutBirds.org (from Cornell's Lab of Ornithology):
The Painted Bunting (Passerina ciris) is sadly still on my bucket list of birds (N. America).
For Birds of the United Kingdom:
RSPB's Bird Identifier (The Royal Society for the Protection of Birds): http://www.rspb.org.uk/wildlife/birdidentifier/form.aspx
For Birds of Europe:
For Birds in Australia:
The Lilac Breasted Roller (Coracias caudatus) may be my favorite bird in Africa (so far).
I haven't found a good identification guide yet. If you see one that is similar to the ones above, please let me know.