I am stupidly impatient, I only need to see the screen and I'm sighing in discontent. I'd be inclined to say any game with a loading screen has pissed me off at some point. I recall the Sims winding me up alot...

Waiting for games just to get to the menu screen when you fire them up pecks my head as well

On another note, I shouldn't complain seeing as back in the day you used to have to wait 45 minutes for the tape to play through just to play a game of pacman or paperboy, now that was horrid loading times ]: