Rip DVD
Of course I don’t suggest you should do this to avoid paying for something, but:
Region locks are annoying! I want to play the DVD I paid for in the device connected to my TV
Children are dangerous to DVDs. Rip, burn, save original.
Handbreak seems like a decent option (though the UI is .. odd, clearly written by a mac user, HA!). The upgrade caused it to stop working (it used to rely on VLC, but now you download libdvdcss.dll separately and put that into the handbreak folder and bam!
Links:
http://lifehacker.com/5809765/how-to-rip-a-dvd-to-your-computer
http://lifehacker.com/5888078/vlc-20-breaks-handbrake-dvd-ripping-heres-how-to-fix-it