[joelbluminator]

> In the future, you might interrupt the coworker

Not many people are gonna risk confrontation with a colleague over some candidate they don't know. Especially not during the interview, maybe afterwards when things are calm. I'm agreeing with you here but let's stay realistic; some companies have assholes working for them, sometimes these assholes get to positions of power. Usually the company knows damn well employee X has a bit of an attitude problem but...guess he adds enough value (or acts well enough) to keep being employed.