I install iStat pro on every Mac I spend any time on (iStat Menu is a must have as well). Today iSlayer released version 4.5 of perhaps the best techy widget ever. This new version makes several improvements listed below straight from iSlayer. My favorite is already the little activity monitor button. A close second, however, is the ability to open a drive in the finder from its icon in iStat pro.
The "official" list of changes . . .
Updated network section with new details & controls for PPP/PPPoE connections
Improved PPC temperature and fan support
Improved Intel temperature support
Improved S.M.A.R.T. drive temperature monitoring
Fixed bugs with battery section and 10.5
Clicking on a disc icon will now open the drive in finder
New keyboard shortcuts (”g” - Update external IP, 1-8 - Change skin color)
Added button to launch Activity Monitor
Other various bug fixes
Various UI tweaks