Here is my Windows Mobile 6.1 Today screen which contains an array of plugins which making living in the WM world a little easier.
A: SPB Software Time which is very configurable and allowed me to have the time visible but not taking up tons of realestate on the screen. Also includes the date and a quick link for setting up alarms and timers.
B: Next is Twit Today which is a small plugin that allows me to update my twitter message without having to launch a full application or browser. I have Evernote and Toodledo set to accept messages through twitter as well so quick posts both of those can be made through here as well.
C: This is the Today plugin from the SPB Software Mobile Shell application. I'm using version 2 because, sadly, they've changed things in version 3 that I find make it less useful. Applications can be 'pinned' to the menu and can be started by clicking on them. It also includes a backlight dimmer (extreme left on top row) which is very handy for late night reading.
D: The built in Live Search plugin which I've modified to search google.com. Google has their own Today screen search but I find it overly large and, sorry to say, ugly.
E: Pocket Innovation System Monitor freeware plugin which shows memory and battery status.
F: WebIS Pocket Informant 8.51 which reads the internal PIM databases and displays the info in much more usable formats than the built in applications.
Currently I'm experimenting with sync'ing the tasks through Outlook to toodledo.com using a small Outlook plugin. This test has been moderately successful but I would prefer having a native Windows Mobile application.
No doubt the items here will change from time to time but this grouping is a good combination of usefulness and info for now...