Yes both Hugh Lawrie and Stephen Fry featured as the best Wooster and Jeeves even to grace the screen.

There have been four series of Blackadder (as well as a number of specials) if I remember correctly, each in a different historical setting (mediaeval - the original Black Adder, Elizabethan - Blackadder 2, George III - Blackadder 3 and the Great War - Blackadder Goes Forth). Hugh Lawrie played the Prince Regent in Blackadder 3 and Lieutenant George St Barleigh in Blackadder Goes Forth.