functions similar to Ctrl + Alt + Del.
It will bring up a "Force Quit" dialog box showing the applications currently running and which one is stuck.
The Finder will always be in there but you do not, normally, tell the Finder to quite. If you have to, then a restart would be in order following that.
You did not mention what model of Mac laptop you were using or what version of OS X it was running. All useful information.
You also did not mention the burning software used to produce the disks.
I have a Mac laptop recently sent on a trial basis by my brother in Tennessee. I am a PC type of guy and am unfamiliar with this os.
I have found that it encounters difficulties with DVD-RW disks. First it refused to play TVS files; I assumed this was because of the file format. Now, it will not play files from the same tv series, recorded on the same disk on which files from the same series played successfully in the past.
I used the same burning software in both cases. In the latter case, the MacBook froze completely and would not respond to any keyboard commands (is there a cntrl+alt+delete for Mack?). there was a small circle rotating but otherwise the screen was blank. Eventually I simply closed the cover with power light still on and gave up.
Any ideas as to what was going on?