What Google Apps (mainly Standard Edition) synchronization are you missing the most?

I started this Google Apps discussion on LinkedIn and even the very first post was very helpful with a lot of links, thanks Aaron!

Still thinking about more synchronizations... I am already planning to include Google Tasks in SprinxCRM UniversalSync and maybe I also do something more on Google Calendar Synchronization as I am not that much happy with the original Google one.

I hope to sort all those things soon and prepare the next generation of my synchronization utility.