The accent is quite different and they use also different vocabulary (as Belgian and Swiss do also). I noticed also they are more strict with the french language, because (for example), any movie you could find titled in english in France is translated in french for Canada

El acento es diferente y muchas expresiones son differente también.

Take a look at this: http://es.wikipedia.org/wiki/Franc%C3%A9s_del_Quebec