MacBook Pro - Disk won't eject

OK this seems to be a not-rare problem, but my DVD won't eject. I have tried everything (holding down the eject key during startup, holding the mouse click, holding it upside down,and every other conceivable thing) and i was wondering if anybody had any advice that isn't so common. I really don't want to go to the genius bar because last time i went i waited over 2 hours for nothing. it's really popular. is that a good sign or a bad sign? but anyway, any advice would be really helpful. thx!