National Lampoon's Christmas Vacation

Rent-it - The third in the series of National Lampoon's "vacation" films starring Chevy Chase's Griswold family may very well be the best, and is certainly one of the top 10 Christmas movies ever made.

Star Wars: Original Trilogy (Episodes IV-VI)

Buy-it - These are some of my favorite films of all-time and even though George Lucas ruined parts of them, again, they are still the definitive Blu-rays for your collection. You have to see this epic space saga in HD. And maybe just mute the last 10 minutes of DTS sound.

Star Wars: Prequel Trilogy (Episodes I-III)

Rent-it - Though these three films actually look and sound better than the original trilogy in HD, the story is lacking (besides nicely tying up loose ends between 3 and 4) and the acting is supremely sub-par. But I did camp out overnight to see the Revenge of the Sith premiere so who am I to judge.