How I Met Your Mother Episode 2.10 Single Stamina

Barney invites his gay, black brother James (Wayne Brady) to "liven" up the gang's life as all of them have been 'coupled' off and Barney is alone. James is an exact duplicate of Barney. To his dismay, Barney discovers that James is engaged to a man named Tom. He disapproves until he discovers that James and Tom have adopted a baby, making Barney an uncle.