jGrowl is a jQuery plugin that raises unobtrusive messages within the browser, similar to the way that OS X's Growl Framework works:

http://www.stanlemon.net/projects/jgrowl.html

Messages appear in a corner of the screen, then fade out. Can display 'strips' (for lack of a word) of sequential messages. Some people call this a toaster effect: like toast coming out of the toaster (and then more toast out of the same hole (hmm)).

[2 cents] Lots of options here...well explained, a good set of examples (but none for putting messages in the viewport bottom-right corner, which is where I'd probably use it). 7 releases so far, so it seems pretty active (though no dates listed and I didn't poke around). Definitely on my keeper list when the muse-case strikes.

The point: We often have to display large amounts of data on the web. Generally we show a table of values with headings and if we really wanted to get fancy we would use a picture of a graph. People like pictures. I like pictures. Why? Because it is far easier to interpret data when it is in visual form. However, creating a picture graph and updating it with new data can be a pain. In this tutorial, we?re going to use a jQuery plugin called Flot to create graphs on the fly.

http://nettuts.com/tutorials/javascript-ajax/visualizing-data-with-flot/

[2 cents] Nice walkthrough for getting good results from the jQuery Flot plugin. Amazing piece of work, that plugin (but hey, I'm not all that mathy, so easily impressed). I'd definitely return to this if I were to want to dive into Flot a bit. Plus, NETTUS tutorials pretty much rock.

Tutorial walks through some of the key (and more useful) concepts for working with jQuery:

http://dotnetslackers.com/articles/ajax/JQuery-Primer-Part-1.aspx

[2 Cents] Wish I had this 2 years ago when I was scraping for some basic info. Nice, succinct intro to the stuff in jQuery that can get you productive pretty quick. Sheesh, does anyone still write friggin getElementByID() stuff anymore other than library developers? Ha! Looking forward to Part 2.

PDF-based cheatsheet for common (ok, most) jquery functions. Broken into same categories as the jquery docs, includes 'overrides' and return types.

http://www.gscottolson.com/jquery/jQuery1.2.cheatsheet.v1.0.pdf

[2 cents] Worth it just to have the lesser-used functions at hand, assuming of course you have room on your desk for paper (ack!). If only my printed copy were clickable so I could get examples for each. Rassafrassin.... someone ought to design a world wide web.

A simple, unobtrusive and customisable client-side method for easily embedding a Twitter feed into a web page:

http://coda.co.za/blog/2008/10/26/jquery-plugin-for-twitter

[2 Cents] Relies on a twitter username, rather than a twitter search, to pull in the feed, which limits it. Of course, that'd be fine for someone who wants to pump their own tweets down into their page. No docs. Pretty sweet looking site that it's posted at.