Following is my list of 'must have' extensions for Chrome:
- Delicious Tools - Bookmarking for myself, my blog and my friends
- Google Mail Checker Plus - Alerts me when I get emails from either of my 2 Google Apps accounts
- LastPass - Secure password management on all devices
- Google Voice (by Google) - SMS and voice mail alerts. Plus it converts all phone numbers to dialable links
- A Bit Better Remember The Milk - Rearranges the page to a more logical (for me) layout
- RSS Subscription Extension (By Google) - Enables RSS discovery in Chrome. Why isn't this included right out of the box?
One side effect of Google awesomeness is that Fluid (on my Mac) just became much less important. If you haven't tried Google Chrome, or you haven't seen the extensions, I recommend taking a look.