Originally Posted by
railroadtycoon
There's a similar thread (while not specific to Canadian customs, there are stories dealing with experiences in Canada with both immigration and customs)
http://www.flyertalk.com/forum/showthread.php?t=277938
Also stories in the travel safety and security forum as well.
The above thread has a very similar saga to mine from Calgary. It is rather amusing... if you say you are on a business trip, then a short overnight stay somehow makes sense to them, but you will get grilled on the nature of the business. Plus it is just not true!
If you are a tourist and staying a week, you'd be more welcome than someone only staying a short time.