Mordheim rocks, but as for all the games - if you play it, they will come!
If you notice that last year hardly anyone was playing WFB, cos Eye of Terror was going on, whereas this summer I don't think I played a single 40k game until the new Roolz came out.
If you like Mordheim like I do (probably one of my favorite games) then get everyone you know who plays Fantasy and get them playing it, or explain how it works. The 'hook' with Mordheim being the jumping between buildings, over chasms, and over trees ala Crouching tiger, once people start doing that they stop thinking "Fantasy but less models" and more "Heh, he just fell twenty feet onto the ground and landed on his spleen! - cool"
The more people like to roleplay, the better Mordheim becomes, so even using some WFRP elements in it as well, like creating your own adventurers tavern and using some dungeon questing elements will get some D&D'rs intyo the fold as well (If you're really desperate to play someone, that is!)
I started playing a couple of games of Mordheim in my local club a few months back with one or two mates, and it got to the stage where I actually ran a participation night to stop all the silly questions about hiding and routing - and now I'm organising a Mordheim campaign for about a dozen guys...