Hey, let's mention what brand of computer it is eight more times.
Seriously, old computers are adorable. You had to turn on a bookcase to get green text on a monitor. Which apparentally is how they did back on Galifrey.
You are correct, he was just as quirky as Tennet without the teen melodrama shit. I like to think that if I were a time-traveling ancient semi-immortal alien I would be Tom Baker.