Google adds remove option to Google Autocomplete
Not because I'm an ego maniac - I was trying to find something, honest - I Googled my name. And Google Autocomplete offered me the option to remove suggestions from the list. Here's a screenshot.

Remove option added to Google Autocomplete
As you can see, next to the first two suggestions is a "remove" link. When you click it, you get a message saying it's removed.

Removed from web history
Next time I type my name, it's gone and a different option is there.

Now it's gone
I think this is new. But who knows ... And it seems to be offering it only on things I've searched for - as opposed to the "malcolm coles twitter" suggestion which I can't remove.
This was already available. Google provides this feature on the homepage too, if instant is disabled.