One can watch the entire Blackadder series (all four seasons) on YouTube here. If you like British humour and convoluted similes that reward deciphering like a drink of iced tea rewards a parched throat, you’ll like this. I especially enjoyed the fourth season :)
P/S. Oh, I should probably mention that the series features early Rowan Atkinson (who’s unquestionably better in Blackadder than he is in Mr Bean; I do think Mr Bean’s sort of humour is appreciated by a larger audience though) and Hugh Laurie (I am one of many many many who enjoy him in House) and Stephen Fry (whose name used to be as inseparable from Laurie’s as sugar, coffee powder and milk powder that have been thoroughly blended in warm water), though I tend to think the writing, rather than the acting, is the part that makes Blackadder most worth straining your eyeballs.