A few cool findings at codeplex for Sharepoint..
Been busy upgrading to SP2 on a couple of sites, and doing a lot of test of new stuff while my students are doing labs. No issues as of yet with sp2. However on codeplex I found some interesting stuff:
SPMessaging - Twitter variant for your sharepoint:
http://spmessaging.codeplex.com/
Windows Live Authentication - Actually works and is quite simple to implement
http://spwla.codeplex.com/
Powershell console in sharepoint - A perfect complement to the Powershell components of iLoveSharepoint
http://sppowershellconsole.codeplex.com/