30 Rock Season 4 Episode 19 (30 Rock s04e19) with title “Argus” airs on Thursday, April 29th 2010 at 09:30 pm via NBC Network. In this 19th episode, you can watch Jenna’s (Starring by : Jane Krakowski) new boyfriend, Paul, raises Liz and Pete’s suspicions, while Jack is finally forced to deal with the death of his mentor, Don Geiss, when Geiss leaves him a strange but meaningful inheritance.