Denzel does the same thing. But I'm lucky coz after about the 10th time of putting him down on the floor he gets sick of it and plays, or just goes into the other room.
But you know what I sometimes do, and I don't know if its a good thing or not. I've got a little bowl, which isn't his usual food bowl, and if he really really wants what I'm having, I'll put a tiny bit of it (only up to a mouthful) in this bowl and put it where his food sits and he'll eat and then go away. Its like he got a taste of it and he's happy.