tarnation is such a piece of shit film. have you guys seen any experimental video diaries before? they're all over the place and they're all pretty much the same thing, except Tarnation has subtitles. That shit was experimental like 30 years ago. Here's a kid who obviously has some heartaching problems, but has already decided to blame it all on his grandfather and the hype of shock-therapy, with frequent recycled images for ironic uses and good candid footages. He was too insecure to be honest and too unoriginal too actually be experimental, all we get instead are these plot points and seemingly staged shots to tell us how we're supposed to feel.
that last shot with him opening his eyes to the music cue was every bit as contrived as the Garden State shit
seriously, look for Joe Gibbons' "Confession of a Sociopath" or Jon Jost's "Six Easy Pieces."