jQuery is in Drupal core!
After a long wait, the awesome jQuery library has finally been committed to Drupal core. jQuery 1.0 will be part of the next major Drupal release, for which the code freeze is about to begin.
Thanks to John Resig and the jQuery community for making such an awesome library. On the Drupal site, thanks to: Konstantin, Steve, Angie, Ted, Jeff and everyone else who tested the patch.
PS: There will still be some bugs in there that I haven't found, but that's what the code freeze is for ;).