Just say no to interviews. (Seriously. If a decision maker wants you hired nothing resembling one takes place.)
I wouldn't even hire my best friend without him interviewing with 4 people (individually) who would be working with or close to him. I also wouldn't take part in the interview myself, to ensure that the treatment was 100% fair and merit based.
A personal recommendation gets you in the door to the interview faster, but you still have to prove yourself, and if you're really that good you'd want us to prove ourselves as well before signing on.
Last four gigs I had involved nothing even remotely resembling an interview.