If we are talking about pitch decks, my favourite part would always be Airbnb’s 2009 seed deck. It was only 12 slides. It had no complex financial modelling.

But it did one thing perfectly: it turned a creepy idea (sleeping in a stranger's house) into a logical inevitability by focusing on the AirBed & Breakfast niche first. They didn't pitch a global hotel disruptor; they pitched a solution for sold-out conferences.