I've been running a mill deck lately, and it has been doing very, very well. It runs:

Hedron Crab
Force of Will
Daze
Spell Snare
Archive Trap
Glimpse the Unthinkable
Mind Funeral

Lands

In a game against goblins, it was about even. Sometimes I could mill before they swung in to kill, sometimes not. Most other decks I faced, including Dreadstill, the Rock, and a few others, died. Is it amazing? No. Is it better now that Zen is out? Oh yes.