Other stuff from Google (or based on Gmail/...) ...

Blogger - Famous online weblog

Picasa - Digital Photo Organizer

Hello - Share photos online, post images to Blogger

GmailFS - provides a mountable Linux filesystem

Google Toolbar

Google Deskbar

Soople - Cool web front end for all hidden features of Google search

GMail POP ...
POP for GMail sounds cool right ? That's a site for helping you out.
Disclaimer: I haven't tried it.

For some reason, the permalink of related posts on this archive don't work. Most of the above is from there.

And, then there's rumor about a browser, operating system, search engine for files on local machine, instant messenger, ...