It's still early in the season but here's a couple of links to possibly get you thinking about summer. Feel free to ad anything you have that covers the events for your particular areas.
Car Shows http://www.1000islandscruisein.com/calendar_2006.htm
Cruise Nights http://www.1000islandscruisein.com/mastercruiselist.htm
http://www.oxfordautosales.com/cruise/

HI,
If I remember correctly, you're in Ottawa right?
Let's see what can be done this summer!

Marc,
Close, it's actually Brockville, there are a number of shows and cruise nights within the triangle of Montreal, Ottawa and Brockville. It shouldn't be a problem picking a date and location. Cornwall have a nice show at Upper Canada and Brockville's Automotion is a super location. Another great meet is the Chevelle Northern Gathering on Grand Island, NY-Yes El Caminos are welcomed. My son and I went last summer and had a blast-Huge cruise night on Friday-closed down the main street in Kenmore,NY for 600+ cars at the Paddock Chevrolet annual cruise, car show Saturday with plenty of bench racing and brown bottles in the parking lot at night.