Okay, admittedly, I don't have a particular favorite, but I do really love episodes 34, 59 and 3.
And whichever the ones with the choco-capsules were. I keep forgetting.
And 57 purely for Meta Knight being covered in pie.
"Now then, hero of the Lower World...
You would risk your life for this land?
You would stand against me, the ruler of the
heavens? Very well... You will before the great
Queen Sectonia. My beauty rivals the divine...
and my power will crush all you hold dear!"
"Bah... Aha... I see. I expected as much from the
hero chosen by the Dreamstalk. But I wonder...
how will you handle this? You see, true beauty...
is control. The Dreamstalk has guided you thus
far. But its bloom... will be your doom!"