Since I've seen a few subjects on certain parts of songs which really irk people, here is one that really gets me every time:
Somewhere near 5 seconds into the song, there is a minor, hardly noticable aberration in the riff. It's nothing to cry over, but it bothers me sometimes.
Yeah, it's one of those little glitches just like the click in 'Seven Seas' which have always been there, so I assume they want them to be that way.
I could be way off here.. but I've thought perhaps it might have been a little cue for Freddie to start singing. Otherwise the 'riff' is so constant it might be easy to miss the right time. But that's probably a silly idea :)