Automated Genealogy is a cool idea I wish I'd thought of first. It's a dual purpose site: a place both to view Canadian census transcriptions, and to transcribe a few pages yourself. The 1901 census is complete, and is now being proofread; and half of the 1911 census has already been transcribed. Each transcribed page has a "split view" option that lets you check the transcriber's accuracy against the original record. The main page has links to other ongoing projects, including several clever "Linking Projects" that match names in the 1901 census with corresponding entries in various offsite genealogical databases.