On the morning that this was due to take place, I became ridiculously nervous. As I awaited our guest's arrival, I was chided by some of the administration staff for pacing restlessly up and down one of the labs.
I suppose I was a little star struck, but it went further than that. The last time I spoke to someone from the BBC, I ended up with my picture in the Sunday Post, next to a cardboard cut-out of Oor Wullie. In the pose, the cartoon character and I were giving the thumbs up. His cheeky grin belied the fact that I appeared to be grabbing him by the nadgers.
Mainly, though, my angst derived from a chronic fear of saying something naff that the atmospheric physicist had heard hundreds of times before and would have to pretend to find funny. ("Hello there. Today we have a bright patch of CPD heading east to Dunfermline.")
In the end, I don't think I said anything too silly and our speaker was terrific. Some time later, I began to ponder the slightly cringeworthy comments people used to make to me when I taught.
These included: "What, not on holiday today?"; "All those sixth-year girls, eh?" and "How many kids did you beat up today?"
Oh would that they said: "I could never do your job because I couldn't find a way of making science engaging to young people." No, it's always: "I'd end up losing it and beating them up."
What is heartening is what teachers say to me now. They invariably ask: "Surely you miss the weans?"
It shows me that, despite the ridge of high pressure sitting over classroom life, most teaching staff have a sunny outlook when it comes to their charges.
Gregor Steele finds meeting TV personalities is compensation for not being on holiday all the time.