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

Ryan C. Thompson da28383d26 Don't allow overrides to be defined for "nil" 11 lat temu
ChangeLog 729dc2f106 Update changelog 11 lat temu
README.md 7a258468d4 Version 1.7 12 lat temu
ido-ubiquitous.el da28383d26 Don't allow overrides to be defined for "nil" 11 lat temu

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