Anyone know any good recipes / methods of making popcorn using a hot-air popper? 

I bought a Prima one the other day and I've got to say I'm not as impressed with it as I thought I would be. 
I thought it would have been a big improvement over the MW stuff but I dont think it is TBH, am I doing something wrong?
The first batch I made was with butter melted with the in built butter dish, this was ok but the butter only covered a few of the kernels.  And the popcorn was a bit 'chewy', which I didnt enjoy.

I just made a lot tonight where I added sugar and honey to the unpopped kernels which tasted good but made a right mess of the machine.

That does sound good.  Will have to try it in a pan tomorrow to see the difference.

Out of interest how do cinemas make popcorn nowadays?

Today, some theaters pop it the old fashioned way, but very few use real butter. Instead, a margarine or butter substitute is often used. Some (lousy) theaters bring already popped corn in huge bags to reheat. This is nearly as tasteless as hot air stuff, but colder and chewier (and not in a good way).

I have grown to dislike what has happed to popcorn in general since Redenbacher started selling/advertizing his "gourmet" popping corn. Yes, the popped kernals are larger. Yes, there are far fewer unpopped nerds. But the taste is quite lacking -- is it mostly a bland substance designed to convey just the flavor of the butter, salt, caramel, or whatever you choose to place on it, must like a flavorless cracker which fails to compete or complement the flavor of the topping. Find real popping corn... the black stuff, or the red, or the oldtime yellow stuff... they have a taste. When contemplating your next popcorn purchase, you must ask it:

Got around to popping using a pan today...HUGE improvement!  Couldnt get hold of any coconut oil so got some hazelnut oil instead, which was nice.