I applied through university. The process took 8 weeks. I interviewed at First Preston HT (Addison, TX) in Apr 2012
Interview
I applied 2/19/12 after receiving the lead through my school's career services job listings. Phone call on 2/22 for that interview, R2 (on-site) on 4/13 (panel), followed by the offer on 4/17. (for a summer internship)
R1 phone 2/22 was the standard behavioral interview (e.g. tell me about yourself, where do you see yourself in five years, describe a time when...)
R2 on-site 4/13 was more technical although, as I was still a student, most questions revolved around coursework.
Similar process for the follow-on internship Summer 2013.
Interview questions [1]
Question 1
Most difficult question: Do you see HOV lanes being a problem for the commute? [Context: As I was commuting from west end of metroplex it was a legit question; commute was 43 miles each way. This turned out to be a non-issue]