TLC is the only one lacking in creativity to me, sans the trials Indy faces near the end. It feels very deriative of Raiders to the point it's more concerned with replicating a similar storyline instead of trying to be creative and bold like TOD and KOTCS were. For that reason it has a very "been there, done that and done it better" feeling and it's the only IJ film that left me feeling that way. The lack of creativity and the extremely over the top, silly humor bog it down majorly for me.
As I've said, it's still a very entertaining and fun film and I love it, but it doesn't seem quite as awesome anymore to me.