I'm sorry I can't give you a more complete answer.
Men: Patrick Chan, Kevin Reynolds, Jeremy Ten Ladies: Amelie Lacoste, Cynthia Phaneuf, Myriane Samson Pairs: Dube/Davison, Duhamel/Radford, Lawrence/Swiegers Ice Dance: Crone/Poirier, Paul/Islam, Virtue/Moir (??? not sure if they will be able to or if anyone will be able to fill in)
Oh yeah, PolymerBob found a good way to look through with ease.
Although it is a slightly annoying format, the ISU website's list of the standings in each event shows all the entrants, and which nations they are from and which events they are competing in:
Vanessa CRONE / Paul POIRIER CAN - Skate America and Skate Canada
Alexandra PAUL / Mitchell ISLAM CAN Skate Canada and Cup of Russia
Kharis RALPH / Asher HILL CAN Cup of China and TEB
Tessa VIRTUE / Scott MOIR CAN possibly TEB, if her health permits
Kaitlyn WEAVER / Andrew POJE CAN NHK and Skate America
Men http://www.isuresults.com/events/gp2010/gpsmen.htm
Patrick CHAN CAN Skate Canada, Cup of Russia
Kevin REYNOLDS CAN Skate Canada, TEB
Shawn SAWYER CAN NHK, Skate America
Jeremy TEN CAN NHK, Skate Canada
Pairs http://www.isuresults.com/events/gp2010/gpspairs.htm
Mylene BRODEUR / John MATTATALL CAN TEB Only
Jessica DUBE / Bryce DAVISON CAN Skate Canada, Cup of Russia
Meagan DUHAMEL / Eric RADFORD CAN Skate Canada only
Kaleigh HOLE / Adam JOHNSON CAN Cup of China only
Paige LAWRENCE / Rudi SWIEGERS CAN Skate Canada only
Kirsten MOORE-TOWERS / Dylan MOSCOVITCH CAN Skate America
Ladies http://www.isuresults.com/events/gp2010/gpsladies.htm
Amelie LACOSTE CAN Skate Canada, Skate America
Cynthia PHANEUF CAN Skate Canada, TEB
Myriane SAMSON CAN Skate Canada, Cup of Russia
Diane SZMIETT CAN NHK only
And, in return, is there any place inside the Skate Canada website where there are team bios that show what music the Canadian competitors are using in their program? They don't seem to update their ISU bios.
If you click on the athletes names a bio comes up, but they haven't updated the music for their programs yet. They'll probably get around to it eventually though. Skate Canada is notoriously slow at updating their site.