Fancy completion all over Emacs, not just for buffers and files. https://github.com/DarwinAwardWinner/ido-completing-read-plus

Ryan C. Thompson 204cc29226 Fix compile errors 12 gadi atpakaļ
ChangeLog 9cab43bbdf Restore compatibility with Emacs 23 and earlier 12 gadi atpakaļ
README.md 7a258468d4 Version 1.7 12 gadi atpakaļ
ido-ubiquitous.el 204cc29226 Fix compile errors 11 gadi atpakaļ

README.md

ido-ubiquitous

Gimme some ido... everywhere!

Does what you were really hoping for when you did (setq ido-everywhere t). Replaces stock emacs completion with ido completion wherever it is possible to do so without breaking things.

Get it from http://marmalade-repo.org/packages/ido-ubiquitous