MS Guru
Many years ago, when SQL Server 6 was US and Canada only and we were definitely not supposed to be developing on that version in the UK, we found an issue with the database that we were creating. We called Microsoft and after going through several layers of tech support they decided that it was beyond their ability to fix over the phone (this was many years ago, after all) so they would despatch a human being to investigate.
The next day a giant of a bearded man with poor personal hygiene arrived from Seattle to stare at our database and our code. After three days of staring, occasionally typing and even less occasionally grunting or asking for coffee, he said, "Got it, I'll send a fix". He flew back to Seattle and a fix was emailed to us a day later. Our stinking, silent, staring guru had fixed things and all was well. We went live before the UK & Europe embargo expired.