03/25/2011 04:44 pm ET Updated Dec 06, 2017

'30 Rock': Aaron Sorkin Walks, Talks With Liz Lemon (VIDEO)

Remember in 2006, when Aaron Sorkin had probably never heard of Facebook, and Tina Fey was mostly known as the brainy girl who told jokes next to Jimmy Fallon at the "Weekend Update" desk? Times sure have changed. Megawriter Sorkin announced in '06 that his follow-up to the critically acclaimed "The West Wing" would be "Studio 60 on the Sunset Strip," a behind-the-scenes drama that takes place at a "Saturday Night Live"-esque sketch comedy program. In its shadow on the NBC fall lineup was "30 Rock," a sitcom spearheaded by Fey. At the time, Fey said, "It’s just bad luck for me that in my first attempt at prime time I’m going up against the most powerful writer in television.”

Well, we all know how that story ended. Sorkin's show was canceled after one season due to low ratings and critical drubbing, allowing him to write "The Social Network," while Fey's show grew to become one of the most highly respected comedies on television.

Cut to the present day. Several Emmys for "30 Rock" and an Oscar for Sorkin later, "30 Rock" gave the writer a pitch-perfect cameo in last night's episode. Parodying his trademark "walk and talk" made famous on "The West Wing," as well as a quick nod to the demise of "Studio 60," Sorkin shows up at a writing audition for "The Sing Off" with Liz Lemon and quickly engages with her in a rapid-fire Sorkin-style dialogue fest before he meets with Nick Lachey.