We just dewormed Jameson, and first tried the 'old' way, by wedging him between my legs, holding mouth open, popping pill, tapping back of mouth etc. He wouldn't sit still so OH came up with the most brilliant idea - knowing that Jameson goes crazy for prawns. He cut a little hole in a prawn and stuffed the pill in - Jameson happily ate/swallowed everything, and I quickly gave him a couple of more prawns to ensure everything definately went down.
That's it, took about 3 seconds. WHILE he purred!