1. - Julia Swalha, Pride and Prejudice, TV, 1995. The future Dawn of The Office, 2001-03, was first seen for Lydia Bennett (played by Saffy from Absolutely Fabulous) before becoming Maria Lucas.
2. - Molly Shannon, Partners, TV, 2012. The stars were set - David Krumholtz, Michael Ure as the titular architects, one straight, one gay, and their partners Sophia Bush and Brandon Routh. The incidentals were harder to settle. The British Davis - best remembered as Dawn in The (UK) Office - was invited to be Renata, droll bookkeeper for Bush’s jewelry boutique owner. After the pilot’s table read, Renata was dropped and replaced by the guest-starring role of Cassandra - for the Saturday Night Live alumna.