I’m impressed so far with Lotusphere here in Orlando, but no announcement has been so welcome as the news that Sametime will now connect with AOL Instant Messenger and Yahoo! To boot, they’ve announced an intention to do the same with Google Talk. Wait, someone's missing -- oh, right. Well, those three are very good.
Lots of applause for sending a chart from a Powerpoint slide in a Sametime IM window, and some of the functions that try to mimic the modes of team interation (maybe too much?) like: Alert, Freejam, Instant Poll, SkillTap (expertise location).