I'm not sure if I just enjoy the near-invincible state that the shoe grants the Bros. or if it's the obscene appearance of the item, but mowing down Goombas and Spinys with an oversized wind-up shoe makes me smile every time. I've been pretty okay with a few of the series' following powerups, too.
The Mario series is definitely not the only source of great powerups, though. Contra's Spread Gun is the only reason I ever got past the first level, for example! You should share your favorites with us in the comments, riiight after you check this week's Japanese hardware sales after the jump!