Ikea is having their super fun midnight madness sale this Friday, December 11th from 8pm - 12am
There will be 50% off certain items, you just won’t know which until you get there! I think they may also vary by city.
In any case if you want to take your chances with the crowd then go because it’s a blast! 
Click here to find your nearest IKEA store
Thanks to sleepingsublime for this info
halley says...
not in Quebec
Scott says...
You can view at least some of the deals by using the link above and choosing your store, then clicking on Great Deals at Ikea, then under Midnight Madness choose “Details and deals” to open up the hourly specials in a pdf.
For example, Ikea Burlington: http://www.ikea.com/ms/en_CA/img/pdf/040_midnight.pdf
Scott says...
Edit: This only works for some stores
anna says...
will there be other deals that are not posted on the pdf in the website? Seems the other stores in BC have better sales…