The Firefox browser for Android (aka Fennec) is still in the beta stages, but beta 3 was just shipped with a number of fixes and improvements. They include:

Improved support for Android keyboards, both hardware and on-screen
New Android-style menus
Fixed a bug in opening links from other apps
Support for uploading files
“Save as PDF” command in the site menu
Fixed rendering of Arabic and Farsi text (on devices with Arabic/Farsi fonts installed)
Slowly but surely, it’s coming along, and the install size is at 13MB, for those of you worried about such things. The folks at Mozilla recommend uninstalling any previous betas before this one.  [Mozilla via Android Central Forums]