jQuery sliders:
- Build a Content Slider with jQuery :: Brenelz’s Web Development Tips
- Easy Slider 1.5 – The Easiest jQuery Plugin For Sliding Images and Content | Css Globe
jQuery tooltips:
Usability testing:
- Low cost usability testing – UserTesting.com
- userfly — Web usability testing made easy
- Chalkmark – User Interface Testing
- Loop11 (via Smithy)
Misc: