I hope they never get around to changing the Event Viewer or Disk Management. I know they are far from perfect, but can you imagine it getting the same treatment as the Task Manager?
In the same time, Task Manager has gained nice charts, it's begun to display stats on network and disk as well as CPU usage, and it's gained a simplified view that my mother can use to close a crashing program. I've been spectacularly impressed with the task manager changes - simultaneously making it easy for low skill users and adding advances features making it unnecessary for me to install Process Explorer on every machine I use.
(btw, just in case... you did click "More details" at the bottom left side, right? Otherwise it looks more barebones than the Windows 3.1 task manager :-P)