1x12 (Leonard Roberts, Jack Coleman & Sendhill Ramamurthy):
part 1- http://www.youtube.com/watch?v=noJ1nISAsUo
part 2- http://www.youtube.com/watch?v=sgk6SySKt1E
part 3- http://www.youtube.com/watch?v=Naml1n7MMwo
part 4- http://www.youtube.com/watch?v=ijeOqtRzbZ8
part 5- http://www.youtube.com/watch?v=6YU69doaW5E
part 6- http://www.youtube.com/watch?v=2cGsVZxCxxI

1x13 (Greg Grunberg & Hayden Panettiere; the episode writer replaces Hayden
later on)
part 1- http://www.youtube.com/watch?v=6QLc3lwW7p8
part 2- http://www.youtube.com/watch?v=tzr-Ncdtm9w
part 3- http://www.youtube.com/watch?v=Vh0GTILGO3Q
part 4- http://www.youtube.com/watch?v=nRJDLhtv9sA
part 5- http://www.youtube.com/watch?v=_T8YEi5AGz4
part 6- http://www.youtube.com/watch?v=AjpYEYIE4ZQ

1x14 (Milo Ventimiglia & Zachary Quinto; later on replaced by Greg, Jack &
episode director)
part 1- http://www.youtube.com/watch?v=uD_X9P31yDM
part 2- http://www.youtube.com/watch?v=95S4etNhK1Q
part 3- http://www.youtube.com/watch?v=_KLSN4_UmjM
part 4- http://www.youtube.com/watch?v=xq1BZ4XsG8E
part 5- http://www.youtube.com/watch?v=9taiWVPsKpM
part 6- http://www.youtube.com/watch?v=ynrqaaSBKcI