The free application VLC got some bad press this week when some security vulnerabilities were revealed. But I also wanted to point out something cool that this media player will do. Namely, allow you to play DVD's from anywhere in the world.
DVD's have a region specification. DVD's that you buy will usually only play in one region of the world, such as North America, Europe, China, etc. So if you put in a DVD that you say bought in England, your Mac will most likely pop it out and say that you can't watch it. Here's how to get around that with the help of VLC.
Mac's DVD Player application checks to see which region a DVD is, and if it's not the region of your Mac (in the US, region 1) then the Mac will automatically eject the disc. Frustrating. VLC on the other hand will play a DVD from any region. So how do you keep DVD Player from interrupting your DVD watching? In System Preferences, go the CD's & DVD's preferences. Under the "When you insert a video DVD", choose "Ignore". Now when you insert a DVD, DVD Player will not automatically start up. So instead, you start VLC and you use the "Open Disc" command to start up your DVD.
By the way, you can change the DVD region that your Mac will play, but only a limited number of times. I think it's around 5. The problem is if you decide to change the region to one other than region 1 (i.e., North America), then you could get your machine stuck on another region (i.e.., Europe) when you run of your chances to change the DVD region. So if you Mac asks you to change the DVD region, say cancel.
Here's
MacUpdate's listing of VLC if you want to download. BTW, Macs will also play back DVD's in the PAL format, unlike your run-of-the-mill DVD player. If you have a disc in PAL which does not have a region code, then DVD Player will play it with no problems.