High Voltage - I've mentioned this before, but I don't remember who to:
I had the worst time trying to find a reliable method for getting Charlie's tablets into him. Good food, bad food, marmite, butter, cheese, malt hairball paste... all might work once, but never more than a few times, and all often took an hour to get the tablet in.
Then I tried Arden Grange Liver Paste for cats. It's a miracle food. Comes in tubes that last about a month. You keep it in your fridge once it's open. The ingredients are basically what you'd expect in the human equivalent. It smells like it'd be good on toast
Anyway, in the past 18 months he's probably been awkward with his tablets less times than I can count on one hand.
The past is the perfect consistency to ball around a tablet, so it's about the size of a pea. You can smear a bit on his nose first so he gets the smell and taste for it, then as he licks that off give him the bit with the tablet in it. I give Charlie a bit more after as well, to make sure the pill has gone down.
http://www.petplanet.co.uk/product.asp?dept_id=1419&pf_id=64464
You can get multi-packs from Amazon. Be aware of the use by date though.