I made the switch to Blu Ray 2 years ago - I won't replace my DVD collection, but every new movie I buy, is on Blu Ray (~90 so far).
I agree that it's hard to go back - at first you don't really notice the huge increase in quality, but when you watch a DVD again everything seems blurry all of a sudden. Though there are some DVDs that look pretty good when they're upscaled (e.g. LotR) and some BRs that look bad (e.g. 11:14), most DVDs just can't compete.










