The litmus test for a country being European is surely participation in the Eurovision Song Contest!
The 2010 lineup -
Albania, Andorra, Armenia, Azerbaijan, Belarus, Belgium, Bosnia & Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark , Estonia, Finland, France, FYR Macedonia, Germany, Greece, Hungary, Iceland, Ireland, Israel, Latvia, Lithuania, Malta, Moldova, Montenegro, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom