I've only had a PS3 and a slim PS2, and neither have broken.
My PS2 came pretty close, though.
I went to a friends house and we stayed up until like 3:00am playing Halo 2 on his Xbox. I had brought my PS2 over to show him the replay of a 75yd hail mary I completed on Madden 06 and the replay of someone ducking and having a defender fly over his head, so the next morning (remember, we got like 4 hrs sleep) I hooked the ps2 into the front input on his living room TV and put the PS2 on the coffee table. We showed him one replay, and then the toaster finished our waffles, so we went into the kitchen to eat breakfast. While we were eating, we left the PS2 hooked up and on Madden's home screen. His sister came out of her bedroom and tripped over the cord. The ps2 fell off the coffee table, flipped a couple of times and the disc drive cover came open and the disc rolled into a corner. The ps2 kept playing the music and displaying the animation for the home screen for around 15 sec, then the music stopped and the animation froze. When I put the disc back in the ps2 and closed the lid, it not only read the disc, it restarted the music and animations exactly where they were before! I was afraid I had scratched the laser lens, but I guess it's still ok, cause my sister still uses it to play Dance Dance Revolution, and it works fine.
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