Canada's do not call legislation
Canada has a draft bill that would implement a do not call list similar to that in the US. In a nutshell, it allows people to add their phone numbers to a list that telemarketers are not supposed to call. There are many reasons why this type of legislation may not be effective in practice, including what entities are exempt.
Prof. Michael Geist wrote an article saying that the draft bill has added so many exceptions that it has become the do not hesitate to call list.
He is also critical of the process the government has followed to obtain feedback on the bill - especially the lack of input from consumer groups.
Anyone who has ever been annoyed by telemarketers, and any business that calls potential customers or donors should read his article.