the extensions I have installed:
Tools for Google
WebAssist.com PayPal eCommerce Toolkit Recipe
PayPal eCommerce Toolkit
WebAssist.com eCommerce Recipes
Skype Button
Dynamic Dropdowns
Cookie Toolkit
Form Toolkit
Payment Buttond for PayPal
SiteScribe
PalettePicker
Surveyor
Jeffrey Zeldman's Web Standards Advisor
Image Resizer
Search for BOSS
PlayStream VideoLaunch
SecurityAssist
Theme-It
HTML Editor
Dynamic Web Charts
CSS Form Builder
DataAssist
SiteAssist Professional
Design Extender
eCart