Fave Mark and Lard, loved their show, least, DLT; pompous, self-righteous, pie-smoking, hairy tw@tt of the first order; "Not one of these young DJs has ever came to me and said, 'Teach me' ." The trouble was, he meant it seriously! Class!
I do suspect you're talking about modern "DJs" but I just had to mention Travis!
Fav: John Peel, Pete Tong, Johnny Walker - all introduced me to so much good music of different genres. [If genres is the plural of genre]
Least fav: Chris Moyles - has there ever been any positive benefit to anyone's life from listening to him? Westwood - totally agree, no need to comment. And finally Chris Evans.