I'm so glad this was my first TMNT film (or tv or graphic novel). Excellent casting (Summer of Ayo!), incredible score and soundtrack, super cool animation, and I was entertained. Lots of throwaway lines that were quick witted. I'm even glad that the mid-credits stinger implies a sequel is in the works.
Considering I was contemplating boycotting anymore super hero films, I'm glad I gave this one a chance.