I applied through an employee referral. The process took 3 days. I interviewed at Shell (Calgary, AB) in Nov 2010
Interview
Fly you out to interview location, pay for hotel and food. Go to brief introduction the night before, given study material, and then out for dinner with employees. 7.5 hour interview consisting of 27 page case study, presentation & QA period, business case scenario, behavioral interview, group interview.