Try putting a yummy treat on a plate and putting the pill close to the treat. Put the plate on the floor and pretend you aren't watching. Supervise to make sure he doesn't spit out the pill in some corner.
You can also pretend like it is something dropped on the floor. This works with Max every time.
With Teddy, I have to put his Interceptor pill as far down his throat as possible and hold his mouth closed until her swallows. He is too smart for any of my tricks or treats.