shtols!! Hi!! That's the kind of welcome that really motivated me to write my own script. I used to download subtitle of tv shows using subliminal.
It's syntax was
subliminal -l en -- video.mkv

so I created a script to download the subtitiles for all the videos in the specified directory!!
Although I could have used inotify for that. But nevertheless here it is!!

#!/bin/sh
# A script to use subliminal and download
# subtitles in the directory passed as an
# argument to the script

if [ -z $1 ]
then
echo "usage fetchSubs.sh Path"
fi

for file in `ls *mkv`
do
subliminal -l en -- $file
done

Feel's good man!!