...author Julia Alvarez reports that hearing the English 'Julia' prompts her to extend her arm for a handshake in greeting, while the Spanish pronunciation, 'Hoolia,' prompts her to proffer her cheek for a kiss. (Pearson, 292*)
I don't know about you, but I find this a fascinating observation on how being bilingual extends to behavior and emotions, not just linguistics.
Bilingual children in our midst
Growing up, I had a friend whose mother was French and father was American, and she was bilingual. Then my friend spent some time in Mexico and became fluent in Spanish. She picked up some other languages in school and college, and most recently has been using her Mandarin skills in China.