I've got the extraction options for tgz files pretty well ingrained in my brain, but whenever I had to create an archive I always had to go back to the manual.
Not any more! Annoyed at my terrible memory I created a little mnemonic for myself. Here's the command in question:
tar -czvf FILENAME.tgz FOLDER
And to remember the params I've got this nifty sentence:
Tar Can Zip Very Fast
I guess it should be gZip for accuracy, but hey it works for me ;)