To kind of play the other side of the field as the other thread, how about your best/worst/favorite/most hated overlord plot+deck combos? I'll give it a start, i guess but be warned; im an idiot and probably don't know what im talking about so heres my favorites so far. As for the worst...i guess a lot of the original box's lieutenants seem kind of forgettable, notably excluding Belthir/Saboteur.
Tristayne/Warlord
Fanatically attacking monsters, overexerting themselves to great effect. sometimes exploding, good fun pretty straight forward berserker.
Mirklace/Punisher
Allegorical Satan, temptations with the extra damage and free revives with punishments. Hey want a free revive? yes? well your friends now get hit for 1/2 your max health. Also leads to a fun explosion frenzy with Blood Bargaining + Rings Of Zhol'alam
Bol'goreth/Infector
WHY CANT I HOLD ALL THESE DISEASES. Constant poison and disease debuffs plus extra debuffs procs lead to infection tokens, which have a myriad of uses. Tried this one a couple of times, pretty fun.