I absolutely HATE SIARPC/BSSC/whatever. The Americans aren't especially good interviewers compared to Clarkson, but the Clarkson interviews are pretty predictable and uninteresting to me. Most of the time the star isn't anyone I know or care about. I do the same as Ryotsu (watch the segment on first view, fast forward every time after that).
Having said that, I voted to keep it because it is a great way to promote Top Gear among viewers who might only tune in to see the hosts of Pawn Stars or a member of their favorite band or (maybe someday) a rising movie star; they watch a little bit of the rest of the show, maybe they get hooked and check it out instead of Bridezillas or whatever. Anything the show can do to build as big a fan base as possible I'm all for because it might mean on day that the show gets a two hour time slot which equates to about an hour and a half of real time, which would be awesome. This way the challenges don't take up the vast majority of viewing time and only leave room for one car review and the BSSC. With more time, they could give us a smoother celeb interview, maybe a news segment, and hopefully more Stig.