you can also try to hold the ibook with the slot facing down and hitting the eject button then... try to shake it a little bit when the drive tries to eject the disc.
another (more hardcore) way is to stick a credit card into the drive when the cd is spinning and try to stop the disc by pressing down on it with the credit card... that should trigger the emergency eject.
@madmax: holding the mouse button on startup only is good when you have software sided problems taht prevent the disc from coming out - like an unreadable disc but the OS tries to read it and crashes while doing so - this wont trigger the emergency eject - its only a normal eject...
and you don't call a software issue that is keeping the drive from ejecting the CD a emergency. that is why that feature is there. that is not a normal way to eject a disk.
on a QS G4 ( i know his isn't but its a example), there is no accessible eject button, if you have a KB that has no eject button, the other way is by holding F12 when booted in a OS (that is if you can boot into the OS) that is a normal way to eject the disk from the drive. i don't think you can even get to the eject hole in the drive on a QS. the hole hold the mouse button on boot is a backup emergency eject system.
