I've also had good luck in the few games I've played with Nurses + Punk Zombies. I got the nurses with the McMourning box, so I figured I might as well use them. Paired with Punk Zombies, you can use one of two strategies :
1) Use the nurses to turn your already nasty Punk Zombies into frothing berserkers that destroy everything they touch... albeit for one turn, but it makes a great desperation move, or good for taking down a bigger model with one of your relatively smaller models.
2) Add some ranged support to your crew by having the Punk Zombies self mutilate, and have the nurses sit back and use Surgery on them to top them back off afterward. With this strategy, you also have the Punk Zombies back to defend the Nurses, should your opponent rush you, flank you, and assassinate your nurses first thing like happened to me a game or two ago...
Food for thought. Take my advice with a grain of salt, as I don't have a LOT of experience yet, but I'm getting there.