It is good to spend a part of interview talking in English

English is not my native language. Same true for most of team-members. So why it looks important for me to speak with candidates in English? Normally this takes about a half of time on interview. We discuss OOD, patterns and some general questions like working experience. English is language of most of technical documentation. Also it is normally used on meetings with customers. The real truth is that you may be a really great software guy here. But without knowing English you won't find good job. Thats how it is. So good move is to learn it and prove this on interview :)