Top 10 games/series made in my home country Canada:
10. Punch Out!! (Wii re-make)
9. Dead Rising 2
8. ModNation Racers
7. Rainbow Six Vegas 1 and 2
6. FIFA series
5. Dragon Age: Origins series
4. EA's NHL series
3. Splinter Cell series
2. Assassin's Creed series
1. Mass Effect series
Other notable games: Skate series, Prototype, Bully series, GTA IV (PC version), Army of Two, Bioshock (PS3 version), Bioshock 2 (multiplayer aspect), and more!
List of Canadian devs: http://en.wikipedia.org/wiki/Category:Video_game_companies_of_Canada