Well Kev's not doing it. So I will :-P
Evanescence are essentially a rock band with female vocals. 'So what?' I hear you cry. 'There are a million of those bands'. Well that's true, but not like this one there isn't. I'm not telling lies, they are the best band I've heard in a long, long time. You'd be a fool not check them out.
Their first on-label album (entitled Fallen) will be released on March 4th (2 days). They have a ton of material recorded before that, which can be found all over KaZaA and the yahoo groups. Their range is spectacular: from moving piano ballads to hard rock stuff and a bunch of things in between. Download some of their stuff (it's not available to buy) and check it out.
All the info you'll need about the band can be found here
[exodus]Evanescence, this is an un-official site, but it's been around a lot longer than the official one and it's a lot better. Links to the official stuff, yahoo groups, livejournal community, etc. can all be found in the links section.
-Kev
P.S. An interview and small acoustic set is available
here.