[VValdo]

Some things you can do with root:

• Delete or replace official Google applications you don't want (e.g., lose Amazon stuff, update browser, use K9 instead of Mail, etc.)
• Customize UI by adding behavior (auto-rotate to the browser, for example) or radical new themes (already in development) to enhance the look and feel of your phone
• Tweak Android settings to let you do things you would otherwise not be able to do (such as get high-quality YouTube... or do SIP/iax2 VOIP... over your g3 connection)
• Access parts of the phone (dialer, microphone, gtalk service, etc.) in ways that are either restricted or there is no API for yet to enhance phone's functionality.
• Add full support for apps inside Android written in other languages besides Android's Java-like VM (ie, Flash, Mono, Python, C, etc.)
• Install non-official variants of Android such as the new Cupcake release
• Support non-official capabilities of the G1 (multi-touch? Voice distorter? etc.)
• Add more unix tools (such as full busybox prompt), windowing systems (such as X11) or unix programs programs, potentially adding tens of thousands of new applications.
• Replace OS entirely with Debian or something else.
• Overclock (?) or otherwise alter default behavior at CPU level
• Add enhanced "full" backup & recovery of the entire phone

etc. etc.

W