Rachel Dratch as the original Jenna on 30 Rock

Hard though it is now to imagine anyone except Jane Krakowski playing Jenna on 30 Rock, Tina Fey’s fellow SNL cast member Rachel Dratch originally played her in the pilot episode. Having a hard time imagining that? Well, here’s how the show would have looked with Dratch.

Of course, Dratch went on to appear in the show anyway in a number of roles, including this rather good one: