cerului has created google docs for ALL the Supernatural season transcripts. This means that if you are looking for particular dialogue you can Ctrl-F or Command-F and type in the word or phrase you are looking for and it will find it quickly and easily. This could be useful for vidding, making gifs or doing research.
cerului created these for a project she is doing and thought it would be helpful for anyone else needing to find specific dialogue.
The transcripts have been copied from the wonderful resource SuperWiki.
cerului has them linked on her journal
HERE.
Or, go directly to each season:
Season One Season Two Season Three Season Four Season Five Season Six Season Seven Season Eight Season Nine