First off, theres a million ways to eject the dvd drive if its stuck, so go google if this article isnt enough for you.
ive been all the way around from pressing multiple keys at boot up, clicking the left mouse button, etc etc etc.
and since im using Windows 7 (go hate on me mac fanboys) i can´t use various os x ways.
anyway, when trying to eject your cd/dvd from windows, it pops up with a message i forgot all about (some weird error) and its just impossible to eject it.
i actually had to dissamble the dvd and pull it out manually one time where i had exchanged the drive with a brand new intel ssd (pressing F12 and holding it down while turning on the mac worked, but after i accidently inserted the leopard dvd, it refused afterwards and ignored F12)
Anyway, heres the little trick i found out about. – use ImgBurn!
simply press the eject button, and magic will happen. the fun thing about this, is if you select Tools – Drive – Eject – it will fail the same way if it was done though Windows.
anyway, if anyone got an explanation on this, please feel free to share your knowledge.