I have many classic sitcoms on DVDs (latest additions being IT Crowd and The Good Life).
All of them are British, except my complete 11 series of Frasier.
Despite my love of Father Ted, Coupling, Blackadder, Steptoe & Son, Fawlty Towers, Black Books...etc..(to name but a few of our comedy DVDs), my 'Desert Island Comedy series' would, alas, be Frasier.