What exactly is Beer can chicken? Can you do this to a turkey?
Open the can of beer and set the chicken on the can. Put it in the oven sitting upright. The heat boils/evaporates the beer, essentially steaming the inside of the chicken with all that beery goodness. You can buy a little rack to keep the whole thing upright, but a roasting pan should work fine.
I don't see why you couldn't do it with a turkey. You may want to use a tallboy can or a can of Foster's