I remember around a year ago I was making a left (in the car) at Bloor & Spadina, and pretty much on the red (as everyone ran the yellow), went to quickly complete my left-hand turn. Anyhow, as I am 80% through the intersection, a cyclist going straight through (who now also had the red) decided to blow the intersection and cut in front of me. Luckily I missed him by about 3-4 feet. The sad joke too is he didn't have on a helmet or anything, and also was not going very fast -- After I got past him, I heard all the other cars honk as he was now blocking traffic that had the green while riding at 10-20km/h.
Another instance, this time riding the 250 out to Oshawa, I was going along Bloor St. around Ritson Rd. and there was some teenager riding his mountain bike in my lane, going the wrong way, right at me. I had to change lanes just to avoid hitting him. To top it off, no helmet, cell phone texting in one hand (looking at the phone), and holding 3 Tim coffees on paper tray in the other (so going the wrong way, in an active lane, with no hands on the bars or ability to quickly grab the bars). He also didn't even look up as a passed him giving him the biggest WTF look through my visor ever.
Also can count the number of times I've had cyclists cut in front of me as I am coming up to a stop (ie. I'm on the right lane in the left tire track, they are in the same lane right track, and then cut to the left 1-2 feet from the intersection, while I am decelerating/braking maybe 3 feet behind them). Almost always I get a 'WTF are you doing' look from them, when I haven't moved in my lane for over 100-200 feet, meanwhile they didn't even look at all behind them before changing position (this is also one reason I want a louder pipe).
As for pedestrians -- I had one guy in a suit on his phone walk into my front bumper on Bloor (Bloor & Bay) too. Proceeded to flip me off and go on about me almost hitting him and he should sue. At that point, I had been stopped, behind the line, for over half the light and hadn't moved an inch. Maybe if he wasn't looking at his cell phone he wouldn't have walked into a stationary object lol.