Pie charts are cool. This sticks a google charts pie chart under any completed poll. It'll add one in after you vote without requiring a page reload, also.
I can't say that I've thoroughly tested it. Really long poll answers might make it get weird.
Install here: [link]
You need Greasemonkey
. (Or a compatible equivalent in another browser. It's possible to persuade Chrome to use these scripts, I believe.)
The after-vote stuff doesn't handle voting in the message center. I might fix this someday.