Hahah! Crazy, I was just listening to Weezer last night. AND I love Kermit, he was the first in a long line of characters that I realised I could impersonate.
'Keep fishin if you FEEL its true!'
More on topic though, do you have a reference for this? Cos I'd like to see Kermit's face front on, I'd imagine it would be quite hard to capture in pixels.
I dig the concept. Theres some nice sellout aswell, and the the white border outline really works well. Cool stuff!
Well, you did what any reasonable person would do. 
Cool theme and the pixelling is good. The ultra thick white isn't for my tastes, but to each his own.
I think the Guitar is the best part on this.