Make sure you have the newest version of Greasemonkey (0.5), install this Greasemonkey script, then go to an artist page on last.fm (eg Modest Mouse). Click the new monkey button and you should get a page with a bunch of links which will load in extra information about that band.
(It's basically Flitter in an iframe)

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good lord
that is so cool and so useful
superb
thanks
Great job, I love this script and use it often. I have a question/suggestion:
Would it be possible to dynamically change the iframe size when we click on the links (within the /monkey/ pages)? I know you can't through CSS, but I found a javascript that might do the trick here:
http://www.dynamicdrive.com/dynamicindex17/iframessi2.htm
This way we wouldn't have to scroll until it's necessary. I'd try it myself, but I have no idea how.
For the next version I'm going to try and integrate it more into the standard page and avoid the iframe altogether - the scrolling was too annoying.
The dynamically resizing iframe trick doesn't work across domains, either, unfortunately.