(all stocks trade on the TSX)
CDV - Com Dev International - maker of satellite equipment.
BCE - Bell Canada Enterprises - Canada's largest phone company, they have interests in media, long-haul data networks, cell phone companies, etc.
ITW - Intrawest Corporation - large real estate company, they own Whistler/Blackcomb, Mammoth Mt., and other large resorts around North America.
PDG - Placer Dome - Canada's second largest gold mining company
HSE - Husky Energy - large Canadian oil/gas company
I'd say that my portfolio is fairly balanced even though I only hold 5 stocks... I have a representative of most major groups with the exception of the financial and industrial sector.
I have my eye on Canadian National (railway) and CIBC (large bank) to round out my portfolio as well.