I flew myself in and spent a day interviewing. It wasn't supposed to be a day however, but because of a client emergency, I ended up there for hours. I interviewed with four creatives for about 20 minutes each as well as the ECD twice.

Pretty average interview process. The recruiter was especially friendly and knowledgeable. The folks that did the Skype interview were awesome. Got to meet a CD, ACD, SAD, and some other creative folks.