Here's a list which I will endeavour to add more to as I recall whom I've worked for in the past. Clients become a bit like dreams, you only remember the great or strange off the top of your head...

In no particular order:

Martinet Development
Mirvish Productions
Kick in the Head
Haas Internet Science
The Global Girl
Ziggy Marley
The Cranberries
Triumph
David Sandborn
Blue Rodeo
Wide Right
David Newland
Octopi Collective
Jane Goodall Institute
Sunglass Hut
eStation
Access North Bay
Liberty Networks
NSpaas Productions
McClaren McCann
Ford
Kraft
Chevrolet
KIA
L'Oréal
McDonald's
NHLPA
Bond Girl Boot Camp
Golf Town
Cold FX
Nsquared
Viagra
Magnus Dux
Uni5
The Home Depot