These are the my best Gadgets:

1. 24 Clock
2. UK Radio player
3. CPU Meter
4. Maps
5. Notes
6. Halo 3 Count Down
7. Calendar
8. Calculator
9. Xbox Live Gamer Tag
10. Remote Desktop Access
11. Shutdown, Restart, Suspend Quick Access
12. Connectivity (IP) and Quality (Wireless & Wired)
13. Run Command

Gadgets are the new addition to Vista which you can really customize, and in my case there is a lot of functional use from them. Whats great is when I listen to the UK Radio player to listen to Kiss 100, Choice FM, and the Hits. I get to listen to all the new dance, hip hop, rnb, and garage music which is really entertaining. And all the other gadgets are self explanatory, you can keep adding as many gadgets as you want. I’m showing two pages of them when I have about 4 pages, and I don’t think there is a limit but there is a limit to functionality if you put too many pages.