The actors chosen to date Sheldon and Amy in the eighth episode of the season.
Analeigh Tipton and Stephen Merchant.
Analeigh has already appeared on the show back in Season two (The Panty Piñata Polarization) where she played one of the models in the 'American's Next Top Model' house. Howard and Raj used their skills to track down the models house and Analeigh is the girl who answers the door.
Stephen is well-known for co-writing and directing the popular British sitcom 'The Office' - with Ricky Gervais.