You ought to take up Snus!
General - Swedish Match
(sorry, it's in swedish)
I assure you, this is in no way the same thing as the US chewing tobacco or dry stuff you put under your bottom lip. It comes in bags or as a loose substance. It holds roughly twice the amount of niccotine than a regular fag and works a treat for smokers in the cockpit.
I've had to stop though to save my teeth and bloodpressure...
/LnS