They played the first one during WMXX, and the next week on RAW/SD I saw commericals. Don't think I saw one this past Monday however.
EDIT: Whoops, this is in the States though, not Canada. So it doesn't help your question much. But, thats what we got down here, FYI.
(edited by samoflange on 25.3.04 1654) David Spade teaches us an Important Lesson:
Joe Dirt: So you're gonna tell me that you don't have no black cats, no roman candles, or screaming mimis? Kicking Wing: No. Joe Dirt: Oh come on man. You got no lady fingers, fuzz buttles, snicker bombs, church burners, finger blasters, gut busters, zippity do das, or crap flappers? Kicking Wing: No, I don't. Joe Dirt: Yer gonna stand there, owning a fireworks stand, and tell me you don't have no whistling bungholes, no spleen spliters, whisker biscuits, honkey lighters, hoosker doos, hoosker don'ts, cherry bombs, nipsy daisers, with or without the scooter stick, or one single whistling kitty chaser? Kicking Wing: No... because snakes and sparklers are the only ones I like. Joe Dirt: Well that might be your problem, it's not what you like, it's the consumer.
I thought I saw it on RAW here in the States... it's basically just the city scenes in the Rock's entrance video mixed with some images of the Staples Center and then the WM21 logo... if you haven't seen it, they're dropping the Roman numerals and just going with "21," which is somewhat interesting.
Unless it was a situation where Sting couldn't do anything because everything had been signed and sealed before the show. Didn't watch, so I don't know exactly how it went down, but it wouldn't be the first time wrestling's made rules up on the fly.