It's awesome to see other Ubuntu users on this forum. I love this operating system with all my heart (even though my girlfriend will always be first... xD). Here are some great things I love about it:
- New Unity interface in Ubuntu 11.04
- Integrated support with Google Calendar
- Integrated support for MSN, AIM, GTalk, Facebook, and Yahoo.
- Integrated Email
- Integrated Facebook support
- Integrated Pandora support via Pithos (best Pandora client for Ubuntu IMO)
- Free office tools
- No antivirus/anti-spyware tools needed
- CompizWiz effects (3D rotating desktop cube, wiggly windows, menu transparency, etc.)
- Great hardware support.
- INSANELY fast boot times!
- Integrated surround sound support and testing features.
- Integrated youtube support in MPlayer
As you can see, Ubuntu has amazing integration with a variety of online services, making it a very productive and much more comfortable operating system to use than Windows or Mac. :3