I'm pleasantly surprised the thread wasn't polluted by even one Toronto shot! No offence to TO, great skyline, but it's nice to have something for the other Ontario cities.
Here are a few Ottawa shots, all of them from random places on the internet;
This one is often used by the Ottawa Citizen, likely taken from the Sir John A. Parkway, looking towards the east.
Place de Ville, the black towers behind the hotel with a saucer and white hotel directly behind the tallest building were the first ones to pierce the height restrictions (twice the height of the old 150 foot limit, completed in 1967). The hotel with the saucer was the tallest when completed in 71', soon beaten in 72' by today's tallest which is the tallest one on the photograph.
This is one of my favourite shots of Ottawa taken from Hull.