Barnabas - quite stiff alot of the time. Seemed uncomfortable.
You're right, he always did look stiff, except when he was kissing Angelique.
I have to say though that my favorite all time kissing scene was when he came to her room in 1795 to ask her if they still could be friends. Well one thing led to another and before you knew it, they were in each other's arms and kissing like two love crazy teens!
I thought the two of them had great on screen chemistry together, kissing & all.
I never saw Barnabas kiss any other actress with the same kind of passion as he did Angelique, not even Josette.