You should. It's a wonderful movie, Brian Henson's done a lot to recapture the feel of his dad's work.
As to the topic at hand, I'm a movie nerd chick, I have to agree with the OP. I love my iTunes, but I find myself still buying movies/TV on Blu-Ray and ripping them. It's a mix of iTunesHD not quite being there in the A/V department, plus there's something about admiring the case art/extras.
This is part of why I'm still a big buyer of LPs over CD's and digital. The nice thing, some artists are including codes to download the albums in MP3, AAC, or FLAC formats.
I'll admit, I have impulse buys on iTunes; catchy tunes i hear on XM, and TV shows like MLP, Avengers and Young Justice. Though, by and large, I get my movies, and favorite TV shows (ie: BSG, Lost, etc) on disc and rip them for on the go.