Applied in February 2013, heard back from them in late April. Was phone interviewed then (going over resume and the work they do) and then 2 weeks later was flown in (all expenses paid) for another in person interview.

In person interview was more informal. I was given a site tour by the hiring manager, met a few other employees and then HR for discussion of benefits. Was notified a week and a half later that an offer was being prepared for me.

Give me another perceived weakness, in addition to the one or two that I was prepared to answer with!

I was constantly asked if I had any questions for them, so be prepared with many of your own questions as it shows interest in the position!!