Ok, so I run firefox and wanted to know what extensions other people have installed. I'm pretty sure I have all the ones I need or could ever use, but who knows?

Here's what I use:

Theme:
Noia Extereme -- A complete UI makeover, very nice grapics, and some added functionality.

Extensions:
Nuke Anything -- Allows you to temporarily remove any object or text from a page. Helpful when printing webpages.
Adblock -- Amazing ad/image blocker. You can use wildcards and regexp to block all images from certain domains!
Tweak Network Settings -- Modifies some net parameters so your pages load faster

Other than the great film by Clint Eastwood, what's "firefox"?

Once they have been updated for version 1.0:

Themes
Nokia and Caramel are my favorites

For extensions I use:
Google preview (small pic to the right of the link--looks neat, no real function)
Sage (Rss feader)
Tabbed browsing preferences
Allow right click (I dislike it when people turn that off, like I could not get around that?!)
AdBlock
And one that adds a dictionary.com lookup in my right click menu.

Eh..I use IE and am happy with it but I was wondering if anyone here uses the google toolbar and if you can get it for firefox? it is the most useful part of my browser...

Google Toolbar

Edit: I don't think there is a version for firefox...at least not on the google site

I never had any use for it because Firefox has a search box built-in that can be configured to use any search engine you like. But it seems like I've heard spyware stories about the Google toolbar. Is there any truth to this?

Google spies like mad on everything you do through them. Like it or not, that is part of why they are such a great search engine.
There has been a google toolbar for firefox in the past, but like you dmn, i just use the built in search bar.

There are rumors that there might be a google branded firefox browser.

Yes, when you install Google it asks if it is OK to report usage statistics. you can respond either way and it will still work. not sure if there is any other spyware, though...

Yeah, that part doesn't exactly qualify as spyware, but it's a simple matter to choose to disable the reporting feature when you install the toolbar.

I'm getting sometime some weird graphic on Firefox. Like breaks in the graphic but I believe it could associated to the Acrobat plugin.