Haha, I know exactly what you mean. Some stuff you love and can sort of see how it was done and some stuff you just love and definitely couldn't have written.

Aaaaand if I'm in a bad brain place the former kind is like "I should try writing something a bit like the thing I liked here sometime although knowing me I'll never finish it", but the other kind is like "Bleh why write something? It's not gonna be THAT good no matter what."