[mizgnomer]

David Tennant and Nina Sosanya

As seen together in:
+ People Like Us - The Actor
+ Casanova
+ Doctor Who - Fear Her
+ Love’s Labours Lost
+ 96 Ways to Say I Love You
+ You, Me, and Him
+ Good Omens

(Both are also in Twenty Twelve/W1A - although David does the narration and doesn’t physically appear in the series)