Caesars are the best! Must be rimmed with celery salt, have a dash of Worcestershire sauce, a generous dash (oxymoron?) of Tabasco sauce (neither of which are very Canadian...) and, critically, a celery stalk--useful for stirring the spices around and eating it has a cooling effect when someone gets heavy-handed with the Tabasco.

Yeah, this is big in Texas as well, I hear.

Anheuser Busch started making Clamato in a can, though I dunno if I trust the Budweiser guys with shellfish...

These also seem to be popular in the Boston area. I was in a restaurant at a hotel and Ceasars were a featured item.