If I place him on my lap he'll immediately walk back onto my desk and lay down in his favorite spot. I can't get any work done; send help.
Edit: Sometimes in response I'll reciprocate by laying my head on him and listening to him purr while we snuggle; he's the perfect therapy cat I love him so much. 
I have a small round table that's large enough for my cats bed that I keep next to my computer chair, but mine only gets up on the desk when it's the middle of the night and knows walking across the keyboard will turn it on to blind me with the monitors.