I managed to hit all of the bob-ombs in Mario Super Star baseball with yoshi... even the extra bob-ombs and reached very close to almost a score of 9999
I once was in the top 100 for some MKW thing. I also got a high score on a pinball machine in France and my brother nearly made it in the top 10 for one MKW contest thing and was in the high scores on the arcade game 'Tekken Tag' also in France.
I have managed to fully complete Banjo-Kazooie meaning I collected all Jiggies, all Notes, unlocked all Note Doors, collected all Empty Honeycombs and laid every puzzle in 3:14.18 in the PAL version of the game, which is 20% slower than the NTSC version of the game. After having made some calculations, I figured out that, if I had done the same things on a NTSC game, I would have finished barely under three hours. And at the time, that was just fifteen minutes slower than the record (which I base off of SpeedDeemosArchive's website's info), and just five minutes slower than the previous record. So yeah, that was pretty amazing.