From Toxel.com, article displaying 20 Unique and Creative Logo Design. Here are a few of my favorites:
Twins Logo
Logo with “2″ instead of “N” designed by Action Designer. |link|

Spartan Logo
Logo by Richard Fonteneau designed for Spartan golf club. |link|

Foot Logo
Perfect example of creative logo design by Dalius Stuoka. |link|

Killed Productions Logo
Logo designed by Sean Heisler for [...]