Yes, a lot of these are part of the 300 that really make Leopard a great OS. I no particular order of priority.
- Searching in Activity Monitor for a particular process by its first letter
- Active repartitioning in Disk Utility
- Time Machine
- AirPort connection info (press Alt/Option when clicking on AirPort icon on menu bar)
- BootCamp is official!
- Good multi-display support