Morrissey's a good block guy.. soft in hits. Morrissey's new contract kicks in which really crushes his value
Stephen Johns is a big hits guy 2+ per game and will give you approx 1.5 blocks per game
One guy starting to emerge that has some decent offensive upside (30ishpts with potential for more) -- Matt Roy in LA 112 sog 132 hit 100 blk in 70gp -- his first full NHL season.
I doubt he is still around but John Marino is a great option as a late round point producing Dman with some periph upside.
Mentioned earlier - Mackenzie Weegar is a solid blk/hit option as well.
Then there's the monsters - McNabb & Borowiecki - Boro runs up PIMs, but McNabb usually stays out of the box.