Well I've been using jQuery from quite some time now, and I must say they have a great product. It is a extremely easy to use as well as makes things such as alternating row colors in a table so easy, with two lines of code you can have alternating row colors on a table. The plugin support is great and pretty much anything you can think of you can find a plugin for.
Andromeda is rocking along and from what I here from Ken there may be some news coming in the next couple of weeks or so.