Dashboard Widgets

What are my favorite dashboard widgets on my Macs?

iMac:

iStat Pro
WhoisConnected
Clock (standard widget)
Weather (standard widget)
Calendar (standard widget)
Calculator (standard widget)

Macbook:

iStat Pro
Mighty Marvel Wallpapers
Clock (standard widget)
Weather (standard widget)
Calendar (standard widget)
Calculator (standard widget)
HO printer monitor

Now, with the Macbook, I purposely limited how many I used since I value screen real estate and try to limit the apps that are being run.  The iMac will be a different story, since the screen is so big and since this machine has horsepower to spare.

I'll add to these lists as I add more widgets on my systems.