Simplest possible rub for pulled pork

[Oregon Bill]

I have a pork shoulder roast in the icebox crying out for a little brown sugar and dry mustard and then a session in the Dutch oven. Anyone hvae a favorite simple rub that's a bullseye for pulled pork roast?

[Oregon Bill]

Well, my rumblin' tummy got the best o' me patience-wise, so I cobbled up this rub on the quick:
1 TBSP salt
1TBSP ground black pepper
2TBSP Paprika
2 TBSP brown sugar
2 TSP dry mustard
1 scant TSP Cayenne
Got the pork shoulder rubbed and wrapped in plastic wrap to work overnight.
Tomorrow, I will sear the roast in hot grease in the Dutch oven, then bake 3-4 hours with 10-12 briquettes on the bottom, 12-14 on top. I hope this works out, as I have had a desperate need for a pulled pork sandwich for several days now.
Question: Do I need to keep a little liquid in the botom o' the oven to keep the roast from scorching? Water? Beer? All thoughts most welcome.

[Delmonico]

A little water might be needed, but I don't on a pork roast with rub I put most of my heat on top like this one, the liquid came out of the loins.



Most of the time I just rub on what sounds good.  This rub is some a customer sent me he made and it is good.

[Oregon Bill]

Del: Thanks for the post. It was that dang picture of your pulled pork that started this whole business. I can smell it, taste it ...

And yes it was good.

[Wishbone]

Hey Bill heres a Good Memphis Rub for next time.  Wishbone
http://www.amazingribs.com/recipes/pork/memphis_magic_dust.html