I can beat the following levels of Yoshi's Island with my feet:
1-1$, 1-2$, 1-3, 1-4$, 1-5*, 1-6*, 1-7$, 1-8*, 2-1, 2-2, 2-3, 2-4, 2-5, 2-6*, 2-7, 2-8, 3-1*, 3-2, 3-3, 3-4, 3-5, 3-6*, 3-7*, 3-8, 4-1*, 4-2, 4-3, 4-4$, 4-5$, 4-6, 4-7$, 4-8, 5-1, 5-2, 5-3, 5-4, 5-5, 5-6*, 5-7, 5-8*, 6-1*, 6-2*, 6-3*, 6-4, 6-5, 6-6$, 6-7*, 6-8*
* Denotes score of 90 or higher, not 100
$ Denotes score of 100
I have yet to attempt any other Mario games with my feet, as of right now.
~I.S.~