In this video you will see (hear) all* of Packie's dialogues during his activities with Niko... and you will get to know him in an entertaining way.
See his sister's (Kate McReary) video: http://www.youtube.com/watch?v=BUoGJQ-BD8c&feature=youtu.be
See more info on Patrick McReary: http://gta.wikia.com/Patrick_McReary

THANKS for watching!