Hmmm... I didn't get to watch the Keynote, but here's an overview of all the cool new stuff:
-Video in Tiger's iChat will be based on H.264 for better quality
-New iChat to allow video/audio conferencing with multiple people
-"Automater" is a visual scriptng application for repetitive tasks
-Tiger will feature "Dashboard" -- "Expos for Widgets." (like Konfabulator)
-Tiger will include much tighter .Mac integration
-New "Core Image" graphics technology coming in Tiger
-New version of Safari to include RSS newsfeed support
-H.264 MPEG video standard to be part of Tiger
-Major OS search upgrade called "Spotlight" allows powerful searching
-Tiger will offer full 64-bit processing, over 150 new features
-Mac OS X 10.4 Tiger will ship in first half of 2005
-More than 12 million OS X users; over 12,000 apps
-Jobs moves on to Mac OS X
-30-inch model ($3,299) requires Power Mac G5 with $599 Nvidia card
-20-inch model costs $1,299, 23-inch model costs $1,999
-FireWire and USB on new displays; require DVI instead of ADC
-New models feature one piece aluminum stand
-New 20, 23 & 30-inch Apple Cinema Displays
-Jobs gives overview of iTunes, iPod, AirPort Express, Power Mac G5
-3,500 developers at this year's conference (17% increase over 2003)