After buying the tchess pro app for my iPad2 I set out on a quest for PGN files to use in the database. Check out what I found!
www.pgnmentor.com
If you don't have a pgn viewer check out theirs! If you already have a pgnviewer like tchess pro or shredder etc... just look at the millions of PGN files for free! Nicely organized by player, by opening, by event. It's a gold mine!
I hope you enjoy it as much as I do.
z