explosions!

[eyeolas]

does anybody have any tutorials on how to model explosions?

[Keeper]

does anybody have any tutorials on how to model explosions?

Are you talking about modelling an explosion mid-explode, or the after effects of an explosion, like a crater and some debris?  I've seen some pretty neat shell incoming about to explode models, too :)

[Bungle]

what sort of explosion?

Hollywood fireball?
WW1 earth plume?
exploding vehicle or building?

Nuke?

[eyeolas]

sorry, should have made that clearer.

it's for my zoanthrope blasting down a dark eldar jetbike conversion, so I'm looking for a suitible holywood vehicle explosion, mostly fire and the very start of some smoke since the model is of a second after the blow has been struck

[Keeper]

If it was me, I'd probably try using cotton wool, appropriately coloured and fixed.  Perhaps with something more solid in the middle for the flames, perhaps not.

Link that might be useful:
http://pantoffelhelden.de/Workshop/body_workshop.html