The Internet Movie Database (IMDB) - Seriously, you should know about this site. It's easily one of the ten most essential sites of the entire Interwebs. If you haven't used it yet, then I sincerely thank you for finding my little ol' blog first. Now link over and discover an overwhelmingly useful web resource!
Netflix - Chances are, you already know about Netflix. For that matter, you probably already have an account. Even my 71 year old grandmother has one. Seriously! Sign up and start renting online. You can even stream a lot of titles straight to your computer.
Redbox - DVD rental vending machines. Chances are, you've seen one at McDonald's or Walmart recently. Rentals are $1 a night. The selection is surprisingly good, with a nice balance of mainstream releases and lesser-known titles. Plus, if you sign up with an online account and pay attention, they give away a code each week to let you have one free rental on Mondays.
Midnights at the Baxter (MySpace Profile) - For those in the Louisville metro area, you should know about the Midnights at the Baxter. Every other Saturday night at midnight, they screen old school cult classics. These are vintage film prints, not DVD projections!
The American Film Institute - You know those annual "Top 100" lists about movies? This is the organization that generates them. Create a free account to view all their lists, and to be kept up to date with their goings-on. If you want more access, you can fork over some coin for a fuller membership.
Billboard Top DVD Sales Chart - A weekly tally of the ten top selling DVD titles. The chart is a bit disappointing, as it lists cumulative totals of all editions of a title. This means that when you see an entry, you have no way of knowing whether the 2-disc Limited Edition Widescreen Special Collector's Edition is selling half as well as the bare bones Full Screen Edition. Still, it's a recognized standard and you can link to it from here. Only for those who even care.
DVD Talk - The forum for discussing every aspect of being a movie fan, from theatrical releases to DVD collecting itself. There's even a sub-forum dedicated exclusively to discussing DVD packaging, including a complete list of titles released with a slipcover! Membership is free, provided you don't violate any of the rules of being a member (basically, don't be a jackass).
Internet Movie Poster Awards (IMP) - A website dedicated to movie posters. Predominantly, the site covers posters from the 2000's, though there are select older entries. Sometimes, a poster is the most interesting thing about a movie!
DVD Aficionado - An online resource in which you can participate in forum discussions about films and DVD releases, as well as track your own DVD library. A little messy; not for casual fans.
Movienizer - A free downloadable program that lets you track movies. You can select movies that you have seen, are in your collection, that you want to own, or even those you have for sale or trade. There are some kinks to be worked out, but the biggest thing is that it only tracks movies--not DVD's. Ergo, it does not care if you have the bare-bones edition of a title or the deluxe boxed set--it's either "In [your] collection" or it isn't. I've taken to using this exclusively to track movies I've seen theatrically.
DVD Profiler - Another downloadable program, but this one does track your DVD library. There is a free version, but to get full access you'll need to cough up $30. I've stayed with the free version and while I still miss DVD Spot, it's pretty useful. Not for casual fans, but definitely a recommendation for serious collectors.
Cinescopes - A project that identifies personality types based on a person's favorite movies. It's great fun, and one of the authors was kind enough to comment on one of my own blog entries. In this blog, I will often cite which Cinescope personality type(s) are likely to enjoy a film.
TV Shows on DVD - Even though it's not about movies, it is dedicated to TV shows released on DVD. Occasionally this sub-topic will be addressed in this blog, and anyway it's a great resource. You can sign up for free and find out what titles have been released of any given U.S. TV series, as well as sign up for alerts of your favorite series. (I'm one of many who anxiously await word of an official DVD release of the '66-'69 Batman).
Ep Guides - A website dedicated exclusively to television series. Here, you will find just about every TV series ever broadcast on American airwaves. Information provided includes episode titles, production numbers, original airdates and synopses. You can also link to iTunes to purchase an episode, when available.
The Digital Bits - This site is one of the first to announce street dates and features for titles, though their format isn't easily searched for archived content. Also, they're completely in love with Blu-ray, so whether or not you've gotten into that format will have something to do with how much you get out of the site.
DVD Empire - An online retailer of DVD's. I've never ordered anything from them, but I am guilty of frequently perusing their site for information about forthcoming releases, as well as to pin down which features are on which edition of a given title.