Don't think so. If it's stuck in try rebooting whilst holding the trackpad button whilst it boots, it should eject it.
what if one can't restart, Installing vista it says eject the first disc and put in the second, well the first one won't eject...
I have had this same problem on my mac. Take a paper clip and make it long ways and stick it in the cd slot and the Cd should pop out.
I got the same problem when installing Media Centre on my Mac - CD 2 of XP is the Media Centre capabilities and had to click cancel and it left out all the media stuff (which suited me better anyway!).
I tried everything to get the CD out and none worked