Graverobber - feels awesome to grab back those Pillages in some combo, especially when you never actually bought one.
Hermit/Madman - ridiculous defense to cursing, and madman might be even better than Tactician (and Tactician is the strongest non-attack $5 IMO).
Poor House - when the board is right, a moneyless deck is just super fun.
Procession - just love it.
Wandering Minstrel - perhaps my new favorite village ahead of Mining Village.
Honorable Mention:
Pillage - hated it at first, very interesting in combos that grab from the trash and perhaps others.
Sage - hated it at first, but there are some very interesting combos available, especially with Sage chains grabbing specific cards, wading through curses/ruins.
Squire - +2 Buys can be quite neat, and the options are awesome. Power $2
Cultist - I love attacks, and the chaining effect is pretty cool. You can even run Cultist+BM which is neat.
Fortress - neat mechanic, just wish it was a little more 'exciting'
Ironmonger - still haven't figured this one out, but it feels like a good opener, and you really can't have too many.
Overall my favorite would have to be Madman, which might be my new favorite Dominion card (but still needs more playtesting).