Stream Movies Direct to Your TV
First, there's Apple TV. Apple developed a box to plug into your computer to stream content through. That can be movies, TV shows or music you bought through the iTunes store. You can also set up your Netflix, Hulu or many other accounts for direct access.
Apple TV works great if you are already using Apple products. It syncs with your iPhone or iPad for a fantastic user experience. Currently, it costs just shy of $100 to purchase. However, if you're not already sold on using Apple products, there are other cheaper options available for you.
The top-most Apple competitor in this market is Roku. The prices range from about $50 to about $100, depending on your preferences. Roku doesn't sync with any other devices, but you can sign into your Netflix, Hulu, Pandora, Amazon and most other major accounts to stream content to your TV.
And don't forget about Google's Chromecast! This little dongle plugs directly into your TV's HDMI port. A couple minutes of setup and you can stream content from your smartphone, tablet or computer directly to your TV. There are some limitations in transmitting from tablets or smartphones, but you can stream almost any content from your chrome browser on any computer within range of your dongle.
All of these options give you streaming options, but you do need wireless to access them. If you have any questions, leave them in the comments below.