Never before have I felt like such a conformist square as I do now after reading through most of the entries in this thread. All in all,I might as well be another brick in the wall or Tetris tiles,as it were, which vanishes without a trace after it neatly connects with a suitable sequence of adjacent tiles. I always RTFM is one is available (GameFAQs make a handy replacement when one isn't) or go through the tutorials so I know how to use all of the abilities that any character that I select is capable of.
Now, if by 'missed' you mean 'stubbornly ignore because one has a more effective method for dealing with in-game problems', then I would say Rage Racer's drifting. I found it to be more effective to just lay off of the gas then make a turn using the momentum that the car built up alone to make those hard turns. I don't know how well drifting would have worked if I had bothered to master it but I got 1st place in all of the races against the A.I. so it didn't matter.
ReCaptcha is bringing up 'one hit wonder'. That makes me wonder if anyone hadn't figured out that, in any side-scrolling Sonic the hedgehog game, they can collect the rings that Sonic drops after he is hit so he doesn't have to be one of those.