I haven't done it yet because of the fact that my food processor sucks bigtime. BUT I know of awesome recipes. Have you ever watched SBS' food Safari, they had a great Dukkah recipe on there, I know that you can pretty much throw anything into the mix, I personally prefer my Dukkah with sesame seeds or nigella seeds but if I'm going to add them I wouldn't grind them with the spices I would add them at the end so they are whole.

Here is a Egyptian recipe from Food Safari:

Ingredients
¾ cup sesame seeds
½ cup pine nuts
½ cup coriander seeds
½ tsp ground cumin
½ tsp salt
½ tsp chilli powder
½ tsp baharat (white and black pepper, cinnamon, cloves and nutmeg)


Preparation
In a large frying pan combine pine nuts and coriander seeds over medium-high heat. When the mix has started to colour, add the sesame seeds and continue to toast until golden brown.

Pour the mixture into a food processor. Add cumin, baharat mix, chilli powder and salt. Blend together.

Use as seasoning in cooking or serve as an accompaniment with bread and olive oil.
Keep in mind you can play with any flavours, and I've even seen some Dukkah with salt in it too if you prefer.