Ethnically, I'm a quarter Jewish, but look completely Jewish (and have a completely Jewish name). as far as religion goes, I've never practised Judaism due to the fact that I inherited it from my paternal grandfather (practice of Judaism is inherited from one's mother, so I understand); I was raised Christian but abandoned organised religion around six years ago.
strange, since after Elijah Wood and Daniel Radcliffe the celebrity comparisons I get most are Bob Dylan and Lou Reed, both of whom are ethnically Jewish