Run Photo Booth, then cover the camera to block all light. Dead or stuck pixels will become very easy to spot.
Yeah. Just use the black cleaning cloth the iMac comes with to cover the iSight.
And running a handbrake right now in 32 bit( since it won't work in 64 bit due to VLC not having a 64 bit version of its app yet) and the Core i7 is buzzing along through at 88% usage at 67 C and 30 minutes ETA. EDIT: Fans have kicked in and Core i7 is at 59 C. Left top corner is hot to the touch though.
Pic.


