Some informal names for Canadians....

Canucks
Muklukers
Pucksters
Toqueheads
Newfies (regional - Newfoundland)
Tabernacs (regional - Quebec)
Black Fly Bait (semi-regional, but really almost anywhere north of, oh, Orillia, I guess)
Snow Eaters (insulting variant: Yellow Snow Eaters)
Moose Shaggers
Beaver Lovers

Heh! Remember, I'm Canadian. Just goofing around here...