Lesser known VS 2010 extensions that provide great all purpose functionality?

Question

What VS 2010 extensions do you recommend for improving all purpose development? I've been having a look through the ones on MSDN, started to wonder if there were any that provide some great/unique features but haven't really got popular for some reason? :)

Also wondering if there are any other repositories for VS extensions?

Answer 1

1) Visual Nunit 2010
2) Regex Editor
3) Spell Checker
4) yUML

are few good ones.

Answer 2

A Vim plugin, like ViEmu or VsVim, is the only way to code in VS.

Answer 3

I do like 'DevColor' when working with css.

Answer 4

StructureAdornment and VSCommands 2010 are really usefull.